CN112419897A - Display device and method for attaching substrate and display panel - Google Patents
Display device and method for attaching substrate and display panel Download PDFInfo
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- CN112419897A CN112419897A CN202011319886.8A CN202011319886A CN112419897A CN 112419897 A CN112419897 A CN 112419897A CN 202011319886 A CN202011319886 A CN 202011319886A CN 112419897 A CN112419897 A CN 112419897A
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- 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
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Abstract
The invention provides a display device and a method for attaching a substrate and a display panel, relates to the technical field of display, and aims to solve the problem that the existing display device is poor in display effect. The display device comprises a display panel, a substrate, an adhesive layer, an air exhaust channel and a blocking part, wherein the substrate is a cover plate or a touch panel and is arranged on the display side of the display panel; the bonding layer is arranged at the peripheral edge of the display panel and is bonded with the substrate so as to form a gap between the display panel and the substrate; the air exhaust channel is communicated with the gap, negative pressure can be formed in the gap so that the substrate is attached to the display panel, and the blocking part is arranged at the channel opening of the air exhaust channel and can close the air exhaust channel. The invention can be used in display devices such as mobile phones, televisions and the like.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a method for bonding a substrate and a display panel.
Background
Currently, in a display device such as a mobile phone, in order to protect a display panel, a cover plate is generally added on a display side of the display panel.
In the existing display device, a display panel is attached to a back plate through an adhesive layer, a gap of 3-6 mm is usually formed between the display panel and a cover plate, the gap can not only cause visual air separation, but also air in the gap can be condensed into fog when the display device enters a low-temperature environment from a high-temperature environment, and the display effect is influenced; in addition, when the thickness of adhesive layer is less, make the clearance between display panel and the apron less like this, if in the use, when the apron inwards bending deformation is great, the apron pushes up display panel easily, can cause and show newton's ring to influence the display effect.
Disclosure of Invention
The embodiment of the invention provides a display device and a method for attaching a substrate and a display panel, which are used for solving the problem of poor display effect of the conventional display device.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a display device, including a display panel, a substrate, an adhesive layer, an air-extracting channel, and a blocking portion, where the substrate is a cover plate or a touch panel and is disposed on a display side of the display panel; the bonding layer is arranged at the peripheral edge of the display panel and is bonded with the substrate, so that a gap is formed between the display panel and the substrate; the air exhaust channel is communicated with the gap and can enable the gap to be in a negative pressure state so as to enable the substrate to be attached to the display panel; the blocking part is arranged at the passage opening of the air exhaust passage and can close the air exhaust passage.
In a second aspect, the embodiment of the invention provides a method for attaching a substrate to a display panel, comprising the steps of bonding the peripheral edge of the display panel with the substrate through a bonding layer; and pumping the gap between the display panel and the substrate by using an air pumping device so as to enable the display panel to be attached to the substrate. The substrate is a cover plate or a touch panel.
According to the display device and the method for bonding the substrate and the display panel, the air exhaust channel is arranged, so that after the display panel is bonded with the substrate, a gap between the display panel and the substrate can be exhausted to a negative pressure state through the air exhaust channel, and the display panel can be bonded with the substrate under the action of atmospheric pressure. After the gap is pumped to a negative pressure state, the blocking part closes the pumping channel to prevent external gas from entering the gap from the pumping channel to damage the negative pressure bonding between the display panel and the substrate. Through the negative pressure laminating between display panel and the base plate, this display device just can eliminate the sense of separating the blank in the vision so in the use to and solve the problem that easily hazes between base plate and the display panel. Meanwhile, the display panel and the substrate are attached together, so that display Newton rings caused by the fact that the cover plate is bent inwards and props against the display panel can be avoided in the using process, and the display effect of the display device can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a display device in some embodiments of the invention;
FIG. 2 is a cross-sectional view A-A of the display device of FIG. 1;
FIG. 3 is an enlarged partial view of the upper end of the display device of FIG. 2;
FIG. 4 is a back side view of the display panel of FIG. 2;
FIG. 5 is a partial enlarged view of the upper right corner of the display panel of FIG. 4 (circled in the upper right corner of the figure);
FIG. 6 is a partial enlarged view of the lower right corner of the display panel in FIG. 4 (in a circle in the lower right corner of the figure);
FIG. 7 is a backside view of the display panel of FIG. 2 after bonding to a substrate;
FIG. 8 is a cross-sectional view B-B of FIG. 7;
FIG. 9 is a cross-sectional view C-C of FIG. 7;
FIG. 10 is a flow chart of a method for assembling a display device according to some embodiments of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the term "coupled" may refer to a direct connection, an indirect connection through intervening media, or a connection between two elements; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The display device in the embodiment of the present invention may be a mobile phone or a tablet computer, and is not limited specifically herein.
Fig. 1 is a front view of a display device according to some embodiments of the present invention, fig. 2 is a sectional view taken along a line a-a of the display device of fig. 1, and fig. 3 is a partially enlarged view of an upper end of the display device of fig. 2, as shown in fig. 1, 2, and 3. The display device includes a housing 100, a display panel 200, a substrate 300 and an infrared touch device 400, wherein the housing 100 includes a front shell 110, a rear shell 120 and a rubber frame 130, the rubber frame 130 is disposed in a setting space formed by buckling the front shell 110 and the rear shell 120, an edge of the substrate 300 is disposed on the rubber frame 130, the display panel 200 is disposed on a back side of the substrate 300, that is, the substrate 300 is located on a display side of the display panel 200.
The substrate 300 is a cover plate (CG), which protects the display panel 200. The display panel 200 may be a liquid crystal display panel, or may be a flexible display panel 200, such as an OLED (Organic Light-Emitting Diode) display panel, which is not limited herein.
The front shell 110 is provided with a mounting cavity 111, the mounting cavity 111 is located at the edge of the substrate 300, the infrared touch device 400 is arranged in the mounting cavity 111, a human hand or a touch pen operates on the surface of the substrate 300, and single-point or multi-point touch is realized by confirming the track of an operating point through the infrared touch device 400.
Of course, the substrate 300 may be a cover plate or a touch panel, and when the substrate 300 is a touch panel, the infrared touch device 400 does not need to be disposed on the front case 110.
As shown in fig. 4, fig. 5 and fig. 6, fig. 4 is a back side view of the display panel 200 in fig. 2, fig. 5 is a partial enlarged view of the upper right corner (circled position of the upper right corner in the drawing) of the display panel 200 in fig. 4, fig. 6 is a partial enlarged view of the lower right corner (circled position of the lower right corner in the drawing) of the display panel 200 in fig. 4, the display device further includes an adhesive layer 500 and a flexible circuit board 600, the adhesive layer 500 is in a long strip shape and is disposed at the peripheral edge of the display panel 200, that is, the adhesive layer 500 is disposed at the periphery of the display area 210 of the display panel 200, and the adhesive layer 500 is provided with a notch 510 penetrating through the inner and outer side surfaces of. One end of the flexible circuit board 600 is connected to the lower side edge of the display panel 200, and the other end is used for connection to a main board.
As shown in fig. 6, the inner side surface a of the adhesive layer 500 is a side surface of the adhesive layer 500 close to the display area 210 of the display panel 200, and the outer side surface b is a side surface of the adhesive layer 500 away from the display area 210 of the display panel 200.
As shown in fig. 7, 8 and 9, fig. 7 is a back side view of the display panel 200 of fig. 2 after being bonded to the substrate 300, fig. 8 is a cross-sectional view B-B of fig. 7, and fig. 9 is a cross-sectional view C-C of fig. 7. The display panel 200 is bonded to the substrate 300 through the bonding layer 500, so that the gap 510 and the substrate 300 enclose an air-extracting channel 700, and the air-extracting channel 700 is communicated with a gap 810 formed between the display panel 200 and the substrate 300;
as shown in fig. 9, the display device further includes a blocking portion 830, and the blocking portion 830 is disposed at the opening of the pumping channel 700 and can close the pumping channel 700.
The adhesive layer 500 may be a double-sided adhesive tape or an adhesive layer, which is not specifically limited herein; the blocking portion 830 may be a curing adhesive, such as a UV adhesive, a sealing tape, or a valve, and is not limited in this respect.
After the display panel 200 and the substrate 300 are bonded, the gap 810 between the display panel 200 and the substrate 300 is pumped to a negative pressure state through the pumping channel 700, at this time, the display panel 200 can be bonded with the substrate 300 under the action of the atmospheric pressure, and after the gap 810 is pumped to the negative pressure state, the blocking portion 830 closes the pumping channel 700 to prevent external gas from entering the gap 810 from the pumping channel 700 to damage the negative pressure bonding between the display panel 200 and the substrate 300. By the negative pressure bonding between the display panel 200 and the substrate 300, the display device can eliminate the visual sense of separation during use, and solve the problem that the substrate 300 and the display panel 200 are easy to fog. Meanwhile, since the display panel 200 and the substrate 300 are attached together, a display newton ring caused by the cover plate bending inward and propping the display panel 200 can be avoided in the using process, so that the display effect of the display device can be greatly improved.
In addition, the air exhaust channel 700 penetrates through the adhesive layer 500 to communicate with the gap 810, so that the air exhaust channel 700 does not need to be arranged on the display panel 200 or the substrate 300, and the damage to the structure of the display panel 200 or the substrate 300 can be greatly reduced.
In some embodiments, as shown in fig. 8, the corner formed by the substrate 300 and the edge of the display panel 200 is provided with a sealing layer 820, and the sealing layer 820 is disposed around the display panel 200. By providing the sealing layer 820, the gap 810 can be better prevented from being filled with external air, so that the adhesion effect between the substrate 300 and the display panel 200 can be ensured.
Wherein, in order to ensure the smoothness of the pumping channel 700, the sealing layer 820 should avoid the channel opening of the pumping channel 700. The sealing layer 820 may be a cured adhesive layer, such as a UV adhesive layer, but is not limited thereto, and other sealing layers 820 capable of sealing between the edge of the display panel 200 and the substrate 300 may be used.
As shown in fig. 10, fig. 10 is a flowchart of a method for bonding a substrate 300 and a display panel 200 in a display device according to some embodiments of the present invention, where the method includes:
s1, as shown in fig. 7 and 8, bonding the peripheral edge of the display panel 200 to the substrate 300 through the adhesive layer 500;
wherein, S1 may include the steps of:
s11, as shown in fig. 4 and 5, an adhesive layer 500 is disposed at a peripheral edge of the display panel 200, and the adhesive layer 500 is disposed around the display region 210 of the display panel 200 and has notches 510 penetrating through inner and outer side surfaces of the adhesive layer 500.
As shown in fig. 5 and 6, when the adhesive layer 500 is a double-sided adhesive tape, the notch 510 may be formed by: the double-sided adhesive tapes are sequentially attached to four side edges of the display panel 200, as shown in fig. 6, one of the double-sided adhesive tapes m1 has a length smaller than the other three double-sided adhesive tapes, so that the gap 510 is formed between the end of the double-sided adhesive tape m1 and the end of the adjacent double-sided adhesive tape m2 after the attachment is completed.
Of course, in addition to the above, the notch 510 may be formed by: the double-sided adhesive tape is sequentially attached to four sides of the display panel 200, and the four double-sided adhesive tapes are connected end to form a rectangular shape, and then a part of material is removed from one double-sided adhesive tape to form the notch 510.
S12, as shown in fig. 7 and 9, the display panel 200 is bonded to the substrate 300 through the adhesive layer 500, such that the gap 510 and the substrate 300 enclose the pumping channel 700.
Of course, in addition to the steps described in S11 and S12, the pumping channel 700 may be provided in other ways, for example, a through hole may be formed in the substrate 300 before the display panel 200 is bonded to the substrate 300, and the through hole is the pumping channel 700.
S2, as shown in fig. 8, a sealing layer 820 is disposed at a corner formed by the edges of the substrate 300 and the display panel 200. Wherein the sealing layer 820 is disposed around the display panel 200.
By providing the sealing layer 820, the gap 810 can be better prevented from being filled with external air, so that the adhesion effect between the substrate 300 and the display panel 200 can be ensured.
S3, the gap 810 between the display panel 200 and the substrate 300 is evacuated by the air-extracting device, so that the display panel 200 and the substrate 300 are bonded.
As shown in fig. 6 and 9, the air-extracting device extracts the gap 810 to a negative pressure state through the air-extracting channel 700, so that the display panel 200 can be attached to the substrate 300 under the action of the external atmospheric pressure.
Between steps S1 and S2, the following steps may be further included: the air exhaust part is embedded in the air exhaust passage 700. Wherein the air extracting part can be an air extracting probe of an air extracting device. By pre-embedding the air exhaust component, the problem that the air exhaust component is difficult to put in due to the fact that the air exhaust channel 700 is blocked in the subsequent steps can be well solved.
After step S3, the following steps may be further included: the air extracting part is pulled out, the blocking part 830 is arranged at the passage opening of the air extracting channel 700 to close the air extracting channel 700, and the blocking part 830 can be conveniently closed to close the air extracting channel 700 by pulling out the air extracting part. By providing the blocking portion 830, it is avoided that the gas enters the gap 810 from the pumping channel 700 to affect the bonding effect between the display panel 200 and the substrate 300.
When the blocking portion 830 is a curing adhesive, before the air exhaust component of the air exhaust device is pulled out from the air exhaust channel 700, the curing adhesive is disposed at the channel of the air exhaust channel 700 in advance, so that after the air exhaust component is pulled out, the curing adhesive can timely block the air exhaust channel 700 and cure the blocking portion to form the curing adhesive.
In addition to the positional relationship between the blocking portion 830 and the sealing layer 820 shown in fig. 9, the sealing layer 820 is disposed at the corner formed by the edge of the substrate 300 and the display panel 200 after the air extracting member is embedded, and the blocking portion is formed after the air extracting member is extracted, so that only the blocking portion may exist at the air extracting passage 700.
The same or similar features in the embodiments of the method for bonding the substrate 300 and the display panel 200 as those in the embodiments of the display device may be referred to the description of the embodiments of the display device, and are not repeated herein.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A display device, comprising:
a display panel;
the substrate is a cover plate or a touch panel and is arranged on the display side of the display panel;
the bonding layer is arranged at the peripheral edge of the display panel and is bonded with the substrate so as to form a gap between the display panel and the substrate;
the air exhaust channel is communicated with the gap and can enable the gap to be in a negative pressure state so as to enable the substrate to be attached to the display panel;
and the blocking part is arranged at the passage opening of the air exhaust passage and can close the air exhaust passage.
2. The display device according to claim 1,
the air exhaust channel is located at the edge of the display panel and penetrates through the inner side surface and the outer side surface of the bonding layer to be communicated with the gap.
3. The display device according to claim 1 or 2,
the blocking part is solidified colloid.
4. The display device according to claim 1 or 2,
a sealing layer is arranged at a corner formed by the substrate and the edge of the display panel, and the sealing layer is arranged around the display panel.
5. A method for bonding a substrate and a display panel is characterized by comprising the following steps:
bonding the peripheral edge of the display panel with the substrate through a bonding layer;
pumping and exhausting the gap between the display panel and the substrate by using an air extractor so as to enable the display panel to be attached to the substrate;
the substrate is a cover plate or a touch panel.
6. The attaching method according to claim 5,
the periphery of the display panel is bonded with the substrate through the bonding layer, and the method comprises the following steps:
and bonding the peripheral edge of the display panel with the substrate through a bonding layer, wherein the bonding layer is provided with a notch penetrating through the inner side surface and the outer side surface of the bonding layer, and the notch and the substrate form an air extraction channel in a surrounding manner.
7. The attaching method according to claim 6,
utilize air exhaust device will display panel with the clearance between the base plate is pumped and is arranged to make display panel with the base plate is laminated mutually, include:
and pumping the gap to a negative pressure state through the pumping channel.
8. The attaching method according to claim 5,
after the gap between the display panel and the substrate is pumped by the air pumping device, the method further comprises the following steps:
and a blocking part is arranged at the passage opening of the air exhaust passage to close the air exhaust passage.
9. The attaching method according to claim 6,
before the exhausting the gap between the display panel and the substrate by the air exhausting device, after the bonding the peripheral edge of the display panel and the substrate by the bonding layer, the method further comprises:
arranging a sealing layer at a corner formed by the substrate and the edge of the display panel; wherein the sealing layer is disposed around the display panel.
10. The attaching method according to claim 9,
after the peripheral edge of the display panel is bonded to the substrate through the bonding layer, before a sealing layer is disposed at a corner formed by the substrate and the edge of the display panel, the method further includes: pre-burying an air exhaust component in the air exhaust channel;
after the gap between the display panel and the substrate is pumped by the air pumping device, the method further comprises the following steps: and taking out the air exhaust part.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319886.8A CN112419897A (en) | 2020-11-20 | 2020-11-20 | Display device and method for attaching substrate and display panel |
| CN202111070098.4A CN113781914A (en) | 2020-11-20 | 2021-09-13 | Display device and method for attaching substrate and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319886.8A CN112419897A (en) | 2020-11-20 | 2020-11-20 | Display device and method for attaching substrate and display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112419897A true CN112419897A (en) | 2021-02-26 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011319886.8A Withdrawn CN112419897A (en) | 2020-11-20 | 2020-11-20 | Display device and method for attaching substrate and display panel |
| CN202111070098.4A Pending CN113781914A (en) | 2020-11-20 | 2021-09-13 | Display device and method for attaching substrate and display panel |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111070098.4A Pending CN113781914A (en) | 2020-11-20 | 2021-09-13 | Display device and method for attaching substrate and display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN112419897A (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009192838A (en) * | 2008-02-14 | 2009-08-27 | Nec Lcd Technologies Ltd | Optical display device |
| CN103258971B (en) * | 2013-04-27 | 2016-02-03 | 上海和辉光电有限公司 | The method for packing of display element and device thereof |
| CN109739380A (en) * | 2018-12-28 | 2019-05-10 | 惠州市华星光电技术有限公司 | A kind of touch control display apparatus and preparation method thereof |
| CN109445644A (en) * | 2018-12-28 | 2019-03-08 | 惠州市华星光电技术有限公司 | A kind of touch control display apparatus and preparation method thereof |
| CN110347289A (en) * | 2019-07-01 | 2019-10-18 | 深圳市华星光电半导体显示技术有限公司 | A kind of infrared touch display device and preparation method thereof |
| CN110413150B (en) * | 2019-07-09 | 2020-12-25 | 深圳市华星光电半导体显示技术有限公司 | Infrared touch display device and preparation method thereof |
| CN110442258B (en) * | 2019-07-15 | 2021-01-01 | 惠州市华星光电技术有限公司 | Touch display device and preparation method thereof |
| CN110442273A (en) * | 2019-07-19 | 2019-11-12 | 深圳市华星光电半导体显示技术有限公司 | Infrared touch display device |
| CN110427123A (en) * | 2019-07-19 | 2019-11-08 | 深圳市华星光电半导体显示技术有限公司 | A kind of touch control display apparatus |
| CN110837315A (en) * | 2019-10-12 | 2020-02-25 | 深圳市华星光电半导体显示技术有限公司 | Touch display device and manufacturing method thereof |
| CN110931651A (en) * | 2019-11-22 | 2020-03-27 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN110879672A (en) * | 2019-11-25 | 2020-03-13 | 深圳一鑫新材料有限公司 | Touch screen laminating process, touch screen and touch display equipment |
| CN111708210A (en) * | 2020-06-12 | 2020-09-25 | 惠州市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
-
2020
- 2020-11-20 CN CN202011319886.8A patent/CN112419897A/en not_active Withdrawn
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2021
- 2021-09-13 CN CN202111070098.4A patent/CN113781914A/en active Pending
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| CN113781914A (en) | 2021-12-10 |
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Application publication date: 20210226 |