CN112581892B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN112581892B
CN112581892B CN201910934103.8A CN201910934103A CN112581892B CN 112581892 B CN112581892 B CN 112581892B CN 201910934103 A CN201910934103 A CN 201910934103A CN 112581892 B CN112581892 B CN 112581892B
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China
Prior art keywords
test
antenna
display panel
bonding pad
pad portion
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CN201910934103.8A
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Chinese (zh)
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CN112581892A (en
Inventor
吕品高
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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Priority to CN201910934103.8A priority Critical patent/CN112581892B/en
Publication of CN112581892A publication Critical patent/CN112581892A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect

Abstract

The invention relates to a display panel and a display device. The display panel comprises a test circuit and a switch, wherein the test circuit and the switch are positioned in the non-display area, the test circuit comprises a test part and a test lead wire electrically connected with the test part, and the switch is arranged in the test lead wire and used for switching on or off the test circuit; the test part comprises a test bonding pad part, a bonding pad part and an antenna, the antenna is electrically connected with the test bonding pad part, and the test bonding pad part is electrically connected with the bonding pad part. According to the display panel and the display device provided by the invention, under the condition that the display panel can be tested and operated normally, the testing part is compatible with the functions of the antenna and the testing pad part, so that the antenna setting space is saved, a large number of antennas can be placed in a limited space under the full screen setting, and the integral transmitting power of the antennas is further improved.

Description

Display panel and display device
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The fifth generation mobile communication technology (5G or 5G technology for short) is a latest generation cellular mobile communication technology, which brings a low-latency and high-network-speed use experience to users, and at the same time, the number of 5G antennas responsible for signal transmission is increased and complicated.
At present, compared with a common display screen, the comprehensive screen has a larger screen occupation ratio and an ultra-narrow frame, and the visual effect of a viewer can be greatly improved, so that the comprehensive screen receives wide attention.
Meanwhile, the Total Radiated Power (TRP) of the antenna decreases due to the fact that the entire screen occupies the space where the antenna is placed.
Disclosure of Invention
Based on the above, the invention provides a display panel and a display device which can improve the above problems, and solves the problem that the whole transmitting power of an antenna is reduced due to the fact that the existing full-face screen occupies the placing space of the antenna.
A display panel is provided with a display area and a non-display area, the display panel comprises a test circuit and a switch, the test circuit is positioned in the non-display area and comprises a test part and a test lead wire electrically connected with the test part, and the switch is arranged in the test lead wire and used for conducting or breaking the test circuit;
the test part comprises a test bonding pad part, a bonding pad part and an antenna, the antenna is electrically connected with the test bonding pad part, and the test bonding pad part is electrically connected with the bonding pad part.
Optionally, the test pad part is integrated with the antenna.
Optionally, the test pad portion and the bonding pad portion are independently disposed, and the test pad portion and the bonding pad portion are electrically connected by a lead.
Optionally, the test pad part, the bonding pad part, and the antenna are integrated into a whole.
Optionally, the test pad portion and the antenna are independently disposed, and the test pad portion and the antenna are electrically connected by a lead.
Optionally, the test pad part and the bonding pad part are integrated into a single body.
Optionally, the test pad portion, the bonding pad portion, and the antenna are independently set, the test pad portion is electrically connected to the bonding pad portion through a lead, and the test pad portion is electrically connected to the antenna through a lead.
Optionally, the antenna includes one or more of an NFC antenna, a bluetooth antenna, a GPS antenna/BDS antenna, a radio frequency antenna, or an FM antenna.
Optionally, the antenna includes a plurality of antenna units, the test pad portion includes a plurality of test terminals, and each of the antenna units is electrically connected to a corresponding one of the test terminals.
A display device comprises the display panel and a circuit board, wherein the circuit board is bonded with the display panel through the bonding pad part.
According to the display panel and the display device, under the condition that the display panel can normally carry out testing and working, the testing part is compatible with the antenna and the function of the testing pad part, so that the antenna setting space is saved, therefore, under the comprehensive screen setting, a large number of antennas can be placed in a limited space, and the integral transmitting power of the antennas is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of the display panel shown in FIG. 1;
FIG. 3 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 4 is an enlarged schematic view of a portion B of the display panel shown in fig. 3.
FIG. 5 is a schematic structural diagram of a display panel according to yet another embodiment of the present invention;
FIG. 6 is an enlarged view of a portion C of the display panel shown in FIG. 5;
FIG. 7 is a schematic structural diagram of a display panel according to still another embodiment of the present invention;
fig. 8 is an enlarged schematic view of a portion D of the display panel shown in fig. 7.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
One or more embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which elements such as shapes, sizes, proportions, angles, and numbers of elements are merely examples, and in different embodiments, the same or corresponding elements may be denoted by the same reference numerals, and repeated descriptions thereof will be omitted.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Where the terms "comprising," "having," and "including" are used herein, another element may be added unless an explicit limitation is used, such as "only," "consisting of … …," etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.
Fig. 1 is a schematic view showing a display device according to an embodiment of the present invention, and fig. 2 is an enlarged schematic view of a portion a in fig. 1. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.
Referring to the drawings, the display panel 100 has a display area AA and a non-display area NA. In the embodiment of the present invention, the display area AA has a display function and may include a display device, and the non-display area NA may have a structure such as a circuit element and a trace, and does not have a display function.
The display panel 100 includes a test circuit 10 and a switch 20 located in the non-display area NA, the test circuit 10 includes a test portion 11 and a test lead 12 electrically connected to the test portion 11, and the switch 20 is disposed in the test lead 12 for turning on or off the test circuit 10.
The test part 11 includes a test pad part 111, a bonding pad part 112, and an antenna 113, the antenna 113 being electrically connected to the test pad part 111, and the test pad part 111 being electrically connected to the bonding pad part 112.
It should be noted that the external test equipment is electrically connected to the display panel 100 through the test pad portion 111 to input the test signal to perform the performance test on the display panel 100, and the circuit board 210 is bonded to the display panel 100 through the bonding pad portion 112 to input the driving signal to perform the display control on the display panel 100. The circuit board 210 may be a Flexible Printed Circuit (FPC) board.
It should be understood that since the antenna 113 is electrically connected to the test pad portion 111 and the test pad portion 111 is electrically connected to the bonding pad portion 112, when the switch 20 turns on the test circuit 10, the external test equipment is communicated with the test circuit 10, that is, a test loop is formed between the external test equipment, the test pad portion 111, the antenna 113, the test lead 12 and the display device, and the antenna 113 is disposed in the test loop as a connection lead. At this time, since the circuit board 210 is electrically connected to the bonding pad portion 112, the electrical connection between the test pad portion 111 and the bonding pad portion 112 does not form a power-on loop, and the bonding pad portion 112 has no influence on the test loop.
When the switch 20 turns off the test circuit 10, a bonding loop is formed between the circuit board, the bonding pad portion 112, the bonding wire (not shown), and the display device, and the antenna 113 is electrically connected to the circuit board 210 through the test pad portion 111 and the bonding pad portion 112. At this time, the antenna 113 performs an antenna function, that is, reception or transmission of a communication signal. At the same time, since the switch 20 opens the test circuit 10, a test loop or a path that cannot be formed between the circuit board 210, the bonding pad portion 112, the test pad portion 111, the antenna 113, and the test lead 12 cannot be formed.
Specifically, in some embodiments, one end of the antenna 113 is electrically connected to the test lead 12, and the other end of the antenna 113 is electrically connected to the test pad portion 111.
Thus, under the condition that the display panel 100 can be tested and operated normally, the testing part 11 is compatible with the functions of the antenna 113 and the testing pad part 111, so that the setting space of the antenna 113 is saved, and therefore, under the full-screen setting, a large number of antennas 113 can be placed in a limited space, and the whole transmitting power of the antenna 113 is further improved.
In some embodiments, the non-display area NA includes two side edges and a lower edge of the display area AA, and the testing part 11 is disposed at the lower edge of the display area AA. In other embodiments, the test pad portion 111, the bonding pad portion 112, and the antenna 113 in the test portion 11 may be disposed at other positions of the non-display area NA, which is not limited herein.
In some embodiments, an antenna control circuit is disposed in the circuit board 210, and when the circuit board 210 is electrically connected to the display panel 100 through the bonding pad portion 112, an antenna control loop is formed among the antenna 113, the test pad portion 111, the bonding pad portion 112, and the antenna control circuit, so as to control the antenna 113.
Referring to fig. 2 again, in some embodiments, the test pad portion 111 and the antenna 113 are disposed independently from each other, and the test pad portion 111 and the antenna 113 are electrically connected by a lead. The use of the antenna 113 can be realized without affecting the function of the test pad section 111 itself. In addition, while the antenna 113 serves as a lead wire, the space for disposing a part of the antenna 113 is saved, and the space for disposing a part of the lead wire, where the antenna 113 is connected to the circuit board 210, is also saved.
Further, test pad portion 111, bonding pad portion 112, and antenna 113 are provided independently of each other, and test pad portion 111 and bonding pad portion 112 are electrically connected by a lead, and test pad portion 111 and antenna 113 are electrically connected by a lead. Thus, the functions of the test pad part 111, the bonding pad part 112 and the antenna 113 are not affected with each other, and the usability of the antenna 113 is ensured.
Fig. 3 shows a schematic view of a display device in another embodiment of the present invention, and fig. 4 shows an enlarged schematic view of a portion B in fig. 3. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.
Referring to the drawings, in other embodiments, the test pad portion 111 is integrated with the bond pad portion 112. It can also be understood that the test process and the bonding process of the display panel share the bonding pad, so that the occupied space of the non-display area NA can be reduced, more placing space is provided for the antenna 113, and the overall transmitting power of the antenna 113 can be improved by the arrangement of a large number of antennas 113.
Further, the antenna 113 may be configured to be wound in a multi-turn configuration. Therefore, the length of the antenna 113 can be increased, and the frequency band covered by the antenna 113 can be increased, so as to improve the communication effect of the antenna 113, and the antenna 113 has a concentrated structure and occupies a small space of the display panel 100. In other embodiments, the antenna 113 may also be designed correspondingly according to the antenna type.
Fig. 5 shows a schematic view of a display device in a further embodiment of the present invention, and fig. 6 shows an enlarged schematic view of a portion C in fig. 5. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.
Referring to the drawings, in some embodiments, the test pad part 111 is integrated with the antenna 113. It is understood that the test pad part 111 may be used as the antenna 113, and the placement space of the antenna 113 may be further reduced. Specifically, the test pad part 111 and the antenna 113 may be integrated into a multi-turn structure. In this way, while the length of the antenna 113 is increased, more electrical connection area can be provided for the test pad part 111.
Further, test pad portion 111 and bonding pad portion 112 are provided independently of each other, and test pad portion 111 and bonding pad portion 112 are electrically connected by a wire. By providing the lead lines, the use of the antenna 113 is also realized without affecting the functions of the test pad section 111 and the bonding pad section 112 themselves.
Fig. 7 shows a schematic view of a display device in still another embodiment of the present invention, and fig. 8 shows an enlarged schematic view of a portion D in fig. 7. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.
Referring to the drawings, in other embodiments, the test pad part 111, the bonding pad part 112, and the antenna 113 are integrated. It is also understood that the test process and the bonding process of the display panel share a pad, and the test pad part 111 may be used as the antenna 113. Thus, the occupied space of the antenna 113 is reduced, and meanwhile, the occupied space of the non-display area NA is also reduced, and the overall screen design is further achieved.
It should be noted that, in order to implement the function of the antenna 113, only one end of the antenna 113 is electrically connected to the bonding pad portion 112, and if the whole antenna 113 is electrically connected to the bonding pad portion 112, the internal structure of the antenna 113 is shorted after being bonded by using a circuit board, so that the antenna 113 fails.
Referring to fig. 2 again, in some embodiments, the test pad portion 111 includes a plurality of test terminals 1111, the antenna 113 includes a plurality of antenna units 1131, and each antenna unit 1131 is electrically connected to a corresponding test terminal 1111. It is understood that the number of antenna elements 1131 may be less than or equal to the number of test terminals 1111. In this way, the number of antennas 113 on the display panel 111 can be increased, so that the frequency bands that can be covered by the antennas 113 are increased, and the efficiency is higher and the performance is better.
It should be noted that, when the antenna 113 includes a plurality of antenna elements 1131, each antenna element 1131 is electrically connected to a corresponding test terminal 1111, and the test leads 13 includes a plurality of test leads, each of which is correspondingly connected to an antenna element 1131 and a test terminal 1111.
Referring to fig. 1 again, in an embodiment, the display panel 100 includes a plurality of test circuits 10, and each test circuit 10 includes a test portion 11. It should be understood that a plurality of test circuits 10 are disposed in the test loop. In some embodiments, the plurality of test circuits 10 may be disposed on one side or both sides of the non-display area NA of the display panel 100, so that more space for disposing the antenna 113 is provided and the number of the antennas 113 is increased.
In some embodiments, the antenna 113 may be one or more of an NFC antenna, a bluetooth antenna, a GPS antenna/BDS antenna, a radio frequency antenna, or an FM antenna. In some embodiments, the antenna 113 may be fabricated from one or more of Indium Tin Oxide (ITO), zinc oxide (ZnO), Carbon Nanotubes (CNT), silver nanowires (AgNW), graphene, silver, and copper. Specifically, the antenna 113 includes at least one coil.
Based on the display panel 100, the present invention further provides a display device 200, which includes the display panel 100 and a circuit board 210, wherein the circuit board 210 is bonded to the display panel 100 through the bonding pad portion 112.
In an embodiment of the present invention, the display device may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a vehicle-mounted device, a wearable device, or an internet of things device.
According to the display panel 100 and the display device 200, under the condition that the display panel 100 can be tested and operated normally, the testing part 11 is compatible with the functions of the antenna 113 and the testing pad part 111, so that the setting space of the antenna 113 is saved, a large number of antennas 113 can be placed in a limited space under the full-screen setting, and the whole transmitting power of the antenna 113 is further improved.
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 more specific and detailed, but not construed 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. A display panel is characterized in that the display panel is provided with a display area and a non-display area, the display panel comprises a test circuit and a switch, the test circuit is positioned in the non-display area and comprises a test part and a test lead wire electrically connected with the test part, and the switch is arranged in the test lead wire and used for conducting or disconnecting the test circuit;
the test part comprises a test bonding pad part, a bonding pad part and an antenna, the antenna is electrically connected with the test bonding pad part, and the test bonding pad part is electrically connected with the bonding pad part.
2. The display panel according to claim 1, wherein the test pad part is integrated with the antenna.
3. The display panel according to claim 2, wherein the test pad portion and the bonding pad portion are provided independently of each other, and the test pad portion and the bonding pad portion are electrically connected by a wire.
4. The display panel according to claim 2, wherein the test pad part, the bonding pad part, and the antenna are integrated.
5. The display panel according to claim 1, wherein the test pad part and the antenna are provided independently of each other, and the test pad part and the antenna are electrically connected by a wire.
6. The display panel of claim 5, wherein the test pad portion is integrated with the bonding pad portion.
7. The display panel according to claim 5, wherein the test pad portion, the bonding pad portion, and the antenna are provided independently of each other, the test pad portion and the bonding pad portion are electrically connected by a wire, and the test pad portion and the antenna are electrically connected by a wire.
8. The display panel of claim 1, wherein the antenna comprises one or more of an NFC antenna, a bluetooth antenna, a GPS/BDS antenna, a radio frequency antenna, or an FM antenna.
9. The display panel according to claim 1, wherein the antenna includes a plurality of antenna elements, the test pad portion includes a plurality of test terminals, and each of the antenna elements is electrically connected to a corresponding one of the test terminals.
10. A display device comprising the display panel according to any one of claims 1 to 9 and a circuit board bonded to the display panel via the bonding pad portion.
CN201910934103.8A 2019-09-29 2019-09-29 Display panel and display device Active CN112581892B (en)

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CN113097094B (en) * 2021-04-29 2022-11-25 云谷（固安）科技有限公司 Substrate to be cut, display panel and preparation method of display panel

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CN207352122U (en) * 2017-10-13 2018-05-11 深圳市美格智能技术股份有限公司 A kind of attachment device for being used to test radio frequency circuit board
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CN101232695A (en) * 2008-02-28 2008-07-30 深圳华为通信技术有限公司 Radio frequency circuit board and manufacturing method thereof
CN201563126U (en) * 2009-11-03 2010-08-25 深圳市共进电子有限公司 Wireless test system of transferring equipment
WO2016114473A1 (en) * 2015-01-15 2016-07-21 엘지전자 주식회사 Rf failure test circuit of mobile terminal and method therefor
CN206422042U (en) * 2016-11-03 2017-08-18 中芯国际集成电路制造(北京)有限公司 Discharge the PID test structures of weld pad plasma
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