CN110890021A - Display device - Google Patents
Display device Download PDFInfo
- Publication number
- CN110890021A CN110890021A CN201911072438.XA CN201911072438A CN110890021A CN 110890021 A CN110890021 A CN 110890021A CN 201911072438 A CN201911072438 A CN 201911072438A CN 110890021 A CN110890021 A CN 110890021A
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- China
- Prior art keywords
- ground line
- gate driving
- circuit board
- driving circuit
- display panel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0067—Devices for protecting against damage from electrostatic discharge
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display device, comprising: a display panel; the flexible circuit board is electrically connected with the display panel; the printed circuit board is electrically connected with the flexible circuit board; the flexible circuit board comprises at least one grid driving circuit and at least one ground wire; and the two ends of the at least one ground wire are respectively electrically connected with the display panel and the printed circuit board. The two sides of each gate drive circuit are respectively provided with a ground wire with enough width so as to fully connect the display panel and the ground wires on the printed circuit board, when the display panel is interfered by external static electricity, the static electricity on the display panel can flow into the printed circuit board through the ground wires at the first time so as to avoid the direct flow of the static electricity into a drive chip arranged in the flexible circuit board, thereby improving the ESD prevention problem of the drive chip.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
In a large scale integrated circuit, in order to cope with an ESD (Electro-Static Discharge) event, an ESD protection circuit is generally required to be disposed for a system on chip to handle the ESD event, so as to protect internal circuits of the system on chip from being damaged by the ESD event.
Generally, the operating voltage of a chip system is lower than the voltage of a power supply system for supplying power to the chip system, so that most of the chip systems are non-high voltage-resistant semiconductors such as common transistors, and accordingly, a universal mask needs to be designed and manufactured for the common transistors; in addition to the possibility of using a common transistor, the ESD protection circuit provided in the system-on-chip also needs to use a single high-voltage-resistant semiconductor, such as a high-voltage-resistant transistor, in order to satisfy the requirements of discharging static electricity and withstanding higher voltages, such as the voltage of a power supply system.
At present, gate driving circuits are arranged on two sides of an existing flexible circuit board, wiring lines provided with a ground network are usually arranged at a data output end of a driving chip, the number of the wiring lines of the ground network is small, the line width is thin, and therefore static electricity of a display panel can easily enter the driving chip through the data output end of the driving chip. If the ESD static electricity is large, the driving chip is easily damaged, and the flexible circuit board is abnormal, and the image display is abnormal.
Disclosure of Invention
In order to solve the above problem, embodiments of the present invention provide a display panel, which can effectively solve the problem that when external static electricity is applied to the display panel, the static electricity is easily transmitted to a driving chip through a routing path on a flexible circuit board, and the driving chip is damaged.
According to an aspect of the present invention, an embodiment of the present invention provides a display device, including: a display panel; the flexible circuit board is electrically connected with the display panel; the printed circuit board is electrically connected with the flexible circuit board; the flexible circuit board comprises at least one grid driving circuit and at least one ground wire; the two ends of the ground wire are respectively electrically connected with the display panel and the printed circuit board.
Furthermore, the at least one gate driving circuit comprises a first gate driving circuit and a second gate driving circuit; the first gate driving circuit and the second gate driving circuit are respectively located on two sides of a driving chip of the flexible circuit board.
Furthermore, the at least one ground line includes a first ground line disposed on a side of the first gate driving circuit away from the second gate driving circuit.
Furthermore, the at least one ground line includes a second ground line, and the second ground line is disposed on a side of the first gate driving circuit close to the second gate driving circuit.
Furthermore, the at least one ground line includes a third ground line, and the third ground line is disposed on a side of the second gate driving circuit away from the first gate driving circuit.
Further, the at least one ground line includes a fourth ground line, and the fourth ground line is disposed on a side of the second gate driving circuit close to the first gate driving circuit.
Further, the first frequency divider of the first radio frequency module and the third frequency divider of the second radio frequency module are both three frequency dividers.
Further, the width of each ground wire is 2 mm to 5 mm.
Further, the material of each ground wire comprises: copper.
Further, the resistance value of each ground line is less than 1 ohm.
The display device has the advantages that the left side and the right side of each grid driving circuit are respectively provided with the ground wire with enough width, so that the display panel is fully connected with the ground wire network on the printed circuit board, when the display panel is interfered by external static electricity, the static electricity on the display panel can flow into the printed circuit board through the ground wire at the first time, the static electricity is prevented from directly flowing into the driving chip arranged in the flexible circuit board, and the ESD problem of the driving chip is improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a display device according to a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a display device according to a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a display device according to a fourth embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a display device according to a fifth embodiment of the present 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, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defined as "first", "second" may explicitly or implicitly include one or more of those features, in the description of the invention "plurality" means two or more unless explicitly defined otherwise.
As shown in fig. 1, a display device provided in the first embodiment of the present invention includes: a display panel 10, a flexible circuit board 20 and a printed circuit board 30.
The display panel 10 may be a liquid crystal display panel or an organic light emitting diode display panel, but is not limited thereto.
The flexible circuit board 20 includes at least one gate driving circuit and at least one ground line. The two ends of the ground wire are electrically connected to the display panel 10 and the printed circuit board 30, respectively. The flexible circuit board 20 is electrically connected to the display panel 10. The printed circuit board 30 is electrically connected to the flexible printed circuit board 20.
The at least one gate driving circuit includes: a first gate driving circuit 22 and a second gate driving circuit 23, where the first gate driving circuit 22 and the second gate driving circuit 23 are respectively located at two sides of the driving chip 21 of the flexible circuit board 20. Of course, in some other embodiments, the number of the gate driving circuits is not limited to two, that is, the at least one gate driving circuit includes: a first gate driving circuit 22 and a second gate driving circuit 23.
In the first embodiment of the present invention, the at least one ground line includes a first ground line 24, and the first ground line 24 is disposed on a side of the first gate driving circuit 22 away from the second gate driving circuit 23.
The width of the first ground wire 24 is 2 mm to 5 mm. In the embodiment of the present invention, the width of the first ground line 24 is 3 mm, and the material of the first ground line is copper, but is not limited thereto, and other materials with lower resistivity may be used, such as iron, etc.
Preferably, each of the ground lines has a relatively low resistivity, e.g., a resistance value of less than 1 ohm.
When the display panel 10 is subjected to static electricity, the static electricity flows into the printed wiring board 30 through the first ground line 1 to ensure that the driving chip 21 of the flexible wiring board 20 is not affected by the static electricity.
The first embodiment of the invention has the advantage that a sufficiently wide ground line is arranged on one side of the first gate driving circuit, so that the ground line network on the display panel and the printed circuit board are sufficiently connected together. When the display panel is interfered by external static electricity, the static electricity on the display panel can flow into the printed circuit board through the ground wire at the first time, so that the static electricity is prevented from directly flowing into a driving chip arranged in the flexible circuit board, and the ESD problem of the driving chip is improved.
As shown in fig. 2, a display device provided in the second embodiment of the present invention includes: a display panel 10, a flexible circuit board 20 and a printed circuit board 30.
The display panel 10 may be a liquid crystal display panel or an organic light emitting diode display panel, but is not limited thereto.
The flexible circuit board 20 includes at least one gate driving circuit and at least one ground line. The two ends of the ground wire are electrically connected to the display panel 10 and the printed circuit board 30, respectively. The flexible printed circuit board 20 is electrically connected to the display panel 10, and the printed circuit board 30 is electrically connected to the flexible printed circuit board 20.
The at least one gate driving circuit includes: a first gate driving circuit 22 and a second gate driving circuit 23, where the first gate driving circuit 22 and the second gate driving circuit 23 are respectively located at two sides of the driving chip 21 of the flexible circuit board 20. Of course, in some other embodiments, the number of the gate driving circuits is not limited to two, that is, the at least one gate driving circuit includes: a first gate driving circuit 22 and a second gate driving circuit 23.
In the second embodiment of the present invention, the at least one ground wire includes a first ground wire 24 and a second ground wire 25.
The first ground line 24 is disposed on a side of the first gate driving circuit 22 away from the second gate driving circuit 23, and the second ground line 25 is disposed on a side of the first gate driving circuit 22 close to the second gate driving circuit 23.
The width of the first ground line 24 and the second ground line 25 is 2 mm to 5 mm, the width of the first ground line 24 and the second ground line 25 is 3 mm in the embodiment of the present invention, and the material of the first ground line 24 and the second ground line 25 is copper, but is not limited thereto, and other material with lower resistivity may be used, such as iron, and the like.
Preferably, each of the ground lines has a relatively low resistivity, e.g., a resistance value of less than 1 ohm.
When the display panel 10 is subjected to static electricity, the static electricity will flow into the printed wiring board 30 through the first ground line 24 and the second ground line 25 to ensure that the driving chip 21 of the flexible wiring board 20 is not affected by the static electricity.
The second embodiment of the present invention has an advantage that two sufficiently wide ground lines (the first ground line and the second ground line) are disposed at two sides of the first gate driving circuit, so that the display panel and a ground line network on the printed circuit board are sufficiently connected together, and when the display panel is interfered by external static electricity, the static electricity on the display panel can flow into the printed circuit board through the ground lines for the first time, so as to prevent the static electricity from directly flowing into the driving chip disposed in the flexible circuit board, thereby improving the ESD protection of the driving chip.
As shown in fig. 3, a display device provided in the third embodiment of the present invention includes: a display panel 10, a flexible circuit board 20 and a printed circuit board 30.
The display panel 10 may be a liquid crystal display panel or an organic light emitting diode display panel, but is not limited thereto.
The flexible printed circuit board 20 includes at least one gate driving circuit and at least one ground line, wherein two ends of the ground line are electrically connected to the display panel 10 and the printed circuit board 30, respectively, the flexible printed circuit board 20 is electrically connected to the display panel 10, and the printed circuit board 30 is electrically connected to the flexible printed circuit board 20.
The at least one gate driving circuit includes a first gate driving circuit 22 and a second gate driving circuit 23, and the first gate driving circuit 22 and the second gate driving circuit 23 are respectively located at two sides of the driving chip 21 of the flexible circuit board 20.
In the third embodiment of the present invention, the at least one ground wire includes a first ground wire 24, a second ground wire 25 and a third ground wire 26.
The first ground line 24 is disposed on a side of the first gate driving circuit 22 away from the second gate driving circuit 23, the second ground line 25 is disposed on a side of the first gate driving circuit 22 close to the second gate driving circuit 23, and the third ground line 26 is disposed on a side 22 of the second gate driving circuit 23 away from the first gate driving circuit.
The widths of the first ground line 24, the second ground line 25 and the third ground line 26 are 2 mm to 5 mm, the widths of the first ground line 24, the second ground line 25 and the third ground line 26 are 3 mm in the embodiment of the present invention, and the material of the first ground line 24, the second ground line 25 and the third ground line 26 is copper, but is not limited thereto, and other materials with lower resistivity may also be used, such as iron.
Preferably, each of the ground lines has a relatively low resistivity, e.g., a resistance value of less than 1 ohm.
When the display panel 10 is subjected to static electricity, the static electricity flows into the printed wiring board 30 through the first ground line 24, the second ground line 25, and the third ground line 26 to ensure that the driving chip 21 of the flexible wiring board 20 is not affected by the static electricity.
The third embodiment of the present invention has the advantages that two sufficiently wide ground lines are disposed on two sides of the first gate driving circuit, and one sufficiently wide ground line (the first ground line, the second ground line, and the third ground line) is disposed on one side of the first gate driving circuit, so that the display panel and the ground line network on the printed circuit board are sufficiently connected together, and when the display panel is interfered by external static electricity, the static electricity on the display panel can flow into the printed circuit board through the ground lines at the first time, so as to prevent the static electricity from directly flowing into the driving chip disposed in the flexible circuit board, thereby improving the ESD protection problem of the driving chip.
As shown in fig. 4, a display device provided in the fourth embodiment of the present invention includes: a display panel 10, a flexible circuit board 20 and a printed circuit board 30.
The display panel 10 may be a liquid crystal display panel or an organic light emitting diode display panel, but is not limited thereto.
The flexible printed circuit board 20 includes at least one gate driving circuit and at least one ground line, wherein two ends of the ground line are electrically connected to the display panel 10 and the printed circuit board 30, respectively, the flexible printed circuit board 20 is electrically connected to the display panel 10, and the printed circuit board 30 is electrically connected to the flexible printed circuit board 20.
The at least one gate driving circuit includes a first gate driving circuit 22 and a second gate driving circuit 23, and the first gate driving circuit 22 and the second gate driving circuit 23 are respectively located at two sides of the driving chip 21 of the flexible circuit board 20.
In the fourth embodiment of the present invention, the at least one ground wire includes a first ground wire 24, a second ground wire 25, a third ground wire 26 and a fourth ground wire 27.
The first ground line 24 is disposed on a side of the first gate driving circuit 22 away from the second gate driving circuit 23, the second ground line 25 is disposed on a side of the first gate driving circuit 22 close to the second gate driving circuit 23, the third ground line 26 is disposed on a side 22 of the second gate driving circuit 23 away from the first gate driving circuit, and the fourth ground line 27 is disposed on a side of the second gate driving circuit 23 close to the first gate driving circuit 22.
The widths of the first ground line 24, the second ground line 25, the third ground line 26 and the third ground line 27 are 2 mm to 5 mm, in the embodiment of the present invention, the widths of the first ground line 24, the second ground line 25, the third ground line 26 and the third ground line 27 are 5 mm, and the materials of the first ground line 24, the second ground line 25, the third ground line 26 and the third ground line 27 are copper, but not limited thereto, other materials with lower resistivity may also be used, such as iron, and the like.
Preferably, each of the ground lines has a relatively low resistivity, e.g., a resistance value of less than 0.5 ohm.
When the display panel 10 is subjected to static electricity, the static electricity flows into the printed wiring board 30 through the first ground line 24, the second ground line 25, the third ground line 26, and the fourth ground line 27 to ensure that the driving chip 21 of the flexible wiring board 20 is not affected by the static electricity.
The fourth embodiment of the present invention is the most preferable embodiment of the present invention, the width of the ground lines is selected to be the largest, the number of the ground lines is the largest, the resistance value of each ground line is the lowest under the same condition, and the protection capability against static electricity is the best.
The fourth embodiment of the present invention has an advantage that two sufficiently wide ground lines are disposed at two sides of the first gate driving circuit and two sufficiently wide ground lines (the first ground line, the second ground line, the third ground line, and the fourth ground line) are disposed at two sides of the second gate driving circuit, so that the display panel and the ground line network on the printed circuit board are sufficiently connected together. When the display panel is interfered by external static electricity, the static electricity on the display panel can flow into the ground wire in the printed circuit board through the ground wire at the first time, so that the static electricity is prevented from directly flowing into the driving chip in the flexible circuit board, and the ESD problem of the driving chip in the flexible circuit board is improved.
As shown in fig. 5, a display device provided in the fifth embodiment of the present invention includes: a display panel 10, a flexible circuit board 20 and a printed circuit board 30.
The display panel 10 may be a liquid crystal display panel or an organic light emitting diode display panel, but is not limited thereto.
The flexible printed circuit board 20 includes at least one gate driving circuit and at least one ground line, wherein two ends of the ground line are electrically connected to the display panel 10 and the printed circuit board 30, respectively. The flexible printed circuit board 20 is electrically connected to the display panel 10, and the printed circuit board 30 is electrically connected to the flexible printed circuit board 20.
The at least one gate driving circuit includes a first gate driving circuit 22 and a second gate driving circuit 23, and the first gate driving circuit 22 and the second gate driving circuit 23 are respectively located at two sides of the driving chip 21 of the flexible circuit board 20.
In a fifth embodiment of the present invention, the at least one ground line includes: a first ground line 24 and a fourth ground line 27.
The first ground line 24 is disposed on a side of the first gate driving circuit 22 away from the second gate driving circuit 23, and the fourth ground line 27 is disposed on a side of the second gate driving circuit 23 close to the first gate driving circuit 22.
The widths of the first ground line 24 and the fourth ground line 27 are 2 mm to 5 mm, the widths of the first ground line 24 and the fourth ground line 27 are 5 mm in the embodiment of the present invention, and the materials of the first ground line 24 and the fourth ground line 27 are copper, but not limited thereto, other materials with lower resistivity may also be used, such as iron, etc.
Preferably, each of the ground lines has a relatively low resistivity, e.g., a resistance value of less than 1 ohm.
When the display panel 10 is subjected to static electricity, the static electricity flows into the printed wiring board 30 through the first ground line 24 and the fourth ground line 27 to ensure that the driving chip 21 of the flexible wiring board 20 is not affected by the static electricity.
The fifth embodiment of the present invention has an advantage in that a sufficiently wide ground line is disposed at one side of the first gate driving circuit and a sufficiently wide ground line (the first ground line and the fourth ground line) is disposed at one side of the second gate driving circuit, so that the ground line network on the display panel and the printed circuit board are sufficiently connected together. When the display panel is interfered by external static electricity, the static electricity on the display panel can flow into the printed circuit board through the ground wire at the first time, so that the static electricity is prevented from directly flowing into the driving chip in the flexible circuit board, and the ESD problem of the driving chip is improved.
In addition, in addition to the ground lines described in the above embodiments, other embodiments may also include other cases, for example, at least one ground line includes a first ground line 24, a third ground line 26 and a fourth ground line 27.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (9)
1. A display device, comprising:
a display panel;
the flexible circuit board is electrically connected with the display panel;
the printed circuit board is electrically connected with the flexible circuit board;
the flexible circuit board comprises at least one grid driving circuit and at least one ground wire;
the two ends of the ground wire are respectively electrically connected with the display panel and the printed circuit board.
2. The display device of claim 1, wherein the at least one gate driving circuit comprises a first gate driving circuit and a second gate driving circuit; the first gate driving circuit and the second gate driving circuit are respectively located on two sides of a driving chip of the flexible circuit board.
3. The display device of claim 2, wherein the at least one ground line comprises a first ground line disposed on a side of the first gate driving circuit away from the second gate driving circuit.
4. The display device as claimed in claim 2, wherein the at least one ground line comprises a second ground line disposed on a side of the first gate driving circuit adjacent to the second gate driving circuit.
5. The display device of claim 2, wherein the at least one ground line comprises a third ground line disposed on a side of the second gate driving circuit away from the first gate driving circuit.
6. The display device as claimed in claim 2, wherein the at least one ground line comprises a fourth ground line disposed on a side of the second gate driving circuit adjacent to the first gate driving circuit.
7. The display device according to claim 2, wherein a width of each of the ground lines is 2 mm to 5 mm.
8. The display device according to claim 2, wherein a material of each of the ground lines includes: copper.
9. The display device of claim 2, wherein each of the ground lines has a resistance of less than 1 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072438.XA CN110890021A (en) | 2019-11-05 | 2019-11-05 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072438.XA CN110890021A (en) | 2019-11-05 | 2019-11-05 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110890021A true CN110890021A (en) | 2020-03-17 |
Family
ID=69746925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911072438.XA Pending CN110890021A (en) | 2019-11-05 | 2019-11-05 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110890021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093334A (en) * | 2021-11-30 | 2022-02-25 | 长沙惠科光电有限公司 | Display module, display device and electrostatic isolation method |
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| KR20080063980A (en) * | 2007-01-03 | 2008-07-08 | 삼성전자주식회사 | Display device |
| CN105280131A (en) * | 2014-07-21 | 2016-01-27 | 三星显示有限公司 | Display device |
| CN105632390A (en) * | 2014-11-24 | 2016-06-01 | 三星显示有限公司 | Display apparatus |
| CN109166554A (en) * | 2018-10-23 | 2019-01-08 | 惠科股份有限公司 | Display device |
| CN109215558A (en) * | 2018-10-23 | 2019-01-15 | 惠科股份有限公司 | Display device |
| CN109890129A (en) * | 2019-03-26 | 2019-06-14 | 厦门天马微电子有限公司 | A kind of display device |
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2019
- 2019-11-05 CN CN201911072438.XA patent/CN110890021A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080063980A (en) * | 2007-01-03 | 2008-07-08 | 삼성전자주식회사 | Display device |
| CN105280131A (en) * | 2014-07-21 | 2016-01-27 | 三星显示有限公司 | Display device |
| CN105632390A (en) * | 2014-11-24 | 2016-06-01 | 三星显示有限公司 | Display apparatus |
| CN109166554A (en) * | 2018-10-23 | 2019-01-08 | 惠科股份有限公司 | Display device |
| CN109215558A (en) * | 2018-10-23 | 2019-01-15 | 惠科股份有限公司 | Display device |
| CN109890129A (en) * | 2019-03-26 | 2019-06-14 | 厦门天马微电子有限公司 | A kind of display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093334A (en) * | 2021-11-30 | 2022-02-25 | 长沙惠科光电有限公司 | Display module, display device and electrostatic isolation method |
| CN114093334B (en) * | 2021-11-30 | 2022-09-06 | 长沙惠科光电有限公司 | Display module, display device and electrostatic isolation method |
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Application publication date: 20200317 |