CN111429796A - Display panel, display module, manufacturing method of display module and electronic device - Google Patents
Display panel, display module, manufacturing method of display module and electronic device Download PDFInfo
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- CN111429796A CN111429796A CN202010358220.7A CN202010358220A CN111429796A CN 111429796 A CN111429796 A CN 111429796A CN 202010358220 A CN202010358220 A CN 202010358220A CN 111429796 A CN111429796 A CN 111429796A
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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
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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
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display panel, a display module, a manufacturing method thereof and an electronic device, wherein the display panel comprises: a display area; the plurality of test terminals are positioned outside the display area, and the test terminals are connected with the display area; the control module is connected with the test terminal and used for controlling the test terminal to receive a test signal when the display panel is in a test stage; and after the display panel is combined into a display module, controlling the test terminal not to receive external signals. The display panel, the display module, the manufacturing method of the display module and the electronic device can improve the yield of the display module.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel, a display module, a manufacturing method of the display module and an electronic device.
[ background of the invention ]
Usually, a test circuit is disposed in the terminal area of the array substrate to detect whether the display function of the medium-and small-sized display panel is poor. As shown in fig. 1, the test circuit includes a plurality of sets of test terminals (pads) 11, and after the array substrate and the color filter substrate are assembled into the display panel, the test terminals are connected with test signals by using a probe of a jig, so that the panel can be lighted, and the display panel can be detected.
The test terminal 11 is generally used only as an input of a test signal of the display panel to detect whether or not the display function of the middle-sized or small-sized display panel is defective. After the display panel is manufactured into the display module, the test terminal has no test requirement at this moment, but the test terminal is provided with an electrical signal because the test terminal is connected with the test circuit, the drive circuit and the pixel circuit. In order to eliminate the potential difference between the color film substrate and the array substrate and avoid the electrostatic discharge phenomenon during the manufacturing process of the In-Plane Switching (IPS) display module, referring to fig. 2, the color film substrate and the array substrate are generally conducted In the silver paste coating area 12 by coating the silver paste 13. The silver paste coating region 12 is located at the terminal region of the array substrate, and is close to the test terminal 11.
Because the distance between the adjacent test terminals 11 is very small, and the silver paste 13 has strong fluidity, when the precision of the coating process is not good enough, the adjacent test terminals 11 are easy to generate short circuit to cause poor module display.
[ summary of the invention ]
The invention aims to provide a display panel, a display module, a manufacturing method of the display module and an electronic device, which can improve the yield of the display module.
To solve the above technical problem, the present invention provides a display panel, including:
a display area;
the plurality of test terminals are positioned outside the display area, and the test terminals are connected with the display area;
the control module is connected with the test terminal and used for controlling the test terminal to receive a test signal when the display panel is in a test stage; and after the display panel is combined into a display module, controlling the test terminal not to receive external signals.
The invention also provides a display module which comprises the display panel.
The invention also provides an electronic device which comprises the display module.
The invention also provides a manufacturing method of the display module, which comprises the following steps:
manufacturing a display panel, wherein the display panel comprises a display area and a plurality of test terminals, the test terminals are positioned outside the display area, and the test terminals are connected with the display area;
controlling the test terminal to receive a test signal so as to test the display panel;
and combining the display panels into a display module to control the test terminal not to receive external signals.
The display panel, the display module, the manufacturing method of the display module and the electronic device comprise a control module which is connected with the test terminal, wherein the control module is used for controlling the test terminal to receive a test signal when the display panel is in a test stage; after the display panel is combined into a display module, controlling the test terminal not to receive external signals; after the display panel is combined into the display module, the test terminal cannot receive external signals, so that the test terminal can be prevented from being short-circuited when the display module is in a silver paste coating stage, and the yield of the display module is improved.
[ description of the drawings ]
FIG. 1 is a top view of a terminal area of a conventional display panel;
FIG. 2 is a top view of a terminal area of a conventional display panel during a silver paste coating process;
FIG. 3 is a top view of a terminal area of a display panel according to an embodiment of the invention;
fig. 4 is a top view of a terminal area of a display panel according to another embodiment of the invention.
[ detailed description ] embodiments
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
Referring to fig. 3 and 4, fig. 3 is a top view of a terminal area of a display panel according to an embodiment of the invention.
As shown in fig. 3, the display panel of the present invention includes: a display area 13, a plurality of test terminals 11, and a control module 30, further including a silver paste coating area 12. In one embodiment, the display panel includes an array substrate and a color filter substrate.
The display area 13 is used for displaying a screen. In one embodiment, the display region 13 may include a plurality of data lines, scan lines, and a plurality of pixels defined by the data lines and the scan lines.
The test terminal 11 is positioned outside the display area 13, and the test terminal 11 is connected with the display area 13;
the control module 30 is connected to the test terminal 11, and the control module 30 is configured to control the test terminal 11 to receive a test signal S1 when the display panel is in a test stage; and controlling the test terminal 11 not to receive the external signal S1 after the display panel is combined into the display module. Wherein the test terminals 11 are connected to the control module 30 by wires.
That is, in the test stage of the display panel, the test terminal 11 receives a test signal. And after the display panel is combined into a display module, controlling the test terminal 11 not to receive an external signal. After the display panels are combined into a display module, silver colloid coating is carried out, and specifically, the silver colloid is coated in the silver colloid coating area 12.
The silver paste coated regions 12 are located at both sides of the plurality of test terminals. That is, the plurality of test terminals 11 are provided at both sides thereof with the silver paste coated regions 12. Fig. 3 and 4 show only the silver paste coated area at a single side of the display area.
In one embodiment, to further avoid short circuit of the test terminals, as shown in fig. 4, the control module 30 includes a plurality of control units 31, and the control units 31 correspond to the test terminals 11 one to one.
In one embodiment, to simplify the structure of the control module, the control unit 31 includes a transistor T having a gate connected to the control signal S2, a drain connected to the corresponding test terminal 11, and a source connected to the test signal S1. Wherein the transistor T is turned on when the display panel is in a test phase; and after the display panel is combined into a display module, the transistor T is closed.
Wherein the test signal S1 and the control signal S2 are provided by an external signal source when the display panel is in a test phase. After the display panels are combined into a display module, the test signal S1 and the control signal S2 may be provided by a driving chip.
In a specific operation process, in a test phase, since the transistor T is turned on, the test signal S1 may be input to the test terminal 11 to test the display panel. After the display panel is combined into a display module, the transistor T is closed, so that the test terminals have no signal, and even if short circuit occurs between the test terminals 11 during the coating of the silver colloid, the yield and the display effect are not influenced.
In order to simplify the manufacturing process, the display region 13 includes a plurality of switching elements, which are fabricated simultaneously with the transistors T. For example, the transistor is synchronously manufactured when the switch element is manufactured in the display area; for example, the gate of the switching element and the gate of the transistor T are prepared in the same process, and the manufacturing methods of the remaining source, drain and semiconductor layers are the same. The semiconductor, the grid electrode and the source and drain electrodes can be prepared through a patterning process, and the sizes of the semiconductor, the grid electrode and the source and drain electrodes can be set according to requirements.
In another embodiment, a plurality of test terminals 11 correspond to one control unit 31, that is, the number of the control units 31 may be one or more. The number of the control units 31 may be plural. In other embodiments, for example, the test terminals 11 close to the silver paste coating area 12 correspond to the control units 31 one by one, and the plurality of test terminals 11 far from the silver paste coating area 12 correspond to one control unit 31. The corresponding manner of the test terminal and the control unit is not limited thereto.
In one embodiment, the present invention further provides a method for manufacturing the display module, including:
s101, manufacturing a display panel, wherein the display panel comprises a display area and a plurality of test terminals, the test terminals are located outside the display area, and the test terminals are connected with the display area;
with reference to fig. 3 and fig. 4, in an embodiment, the display panel includes an array substrate and a color filter substrate, and the step may specifically include manufacturing the array substrate and the color filter substrate respectively, where the test terminal 11 may be located on the array substrate, the test terminal 11 is connected to the display area 13, and a specific structure of the display panel is described above and is not repeated herein.
S102, controlling the test terminal to receive a test signal so as to test the display panel;
the test signal S1 is coupled to the test terminal 11 to detect the display panel. In one embodiment, the transistor T may be turned on by the control signal S2 to facilitate the input of the test signal S1 to the test terminal 11. The control signal and the test signal may be provided by an external signal source. In an embodiment, the test terminal may be controlled by the control module 30 to receive the test signal, and in particular, the structure of the control module may be as described above.
S103, combining the display panels into a display module, and controlling the test terminal not to receive external signals;
in one embodiment, the array substrate and the color filter substrate are combined to form a display module.
After the display module is tested, the test terminal 11 is controlled not to receive an external signal, and the transistor T can be turned off by the control signal S2, so that the test terminal 11 is in a no-signal state. In one embodiment, the control module 30 may control the test terminal 11 not to receive an external signal. In particular, the structure of the control module can be referred to above.
The invention also provides a display module which comprises any one of the display panels. The display module further comprises a driving chip; the control signal is provided by the driving chip. The electronic device can be a mobile phone, a tablet computer, a computer and other equipment.
The invention also provides an electronic device which comprises any one of the display modules. The electronic device can be a mobile phone, a tablet computer, a computer and other equipment.
The display panel, the display module, the manufacturing method of the display module and the electronic device comprise a control module which is connected with the test terminal, wherein the control module is used for controlling the test terminal to receive a test signal when the display panel is in a test stage; after the display panel is combined into a display module, controlling the test terminal not to receive external signals; after the display panel is combined into the display module, the test terminal cannot receive external signals, so that the test terminal can be prevented from being short-circuited when the display module is in a silver paste coating stage, and the yield of the display module is improved.
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 (10)
1. A display panel, comprising:
a display area;
the plurality of test terminals are positioned outside the display area, and the test terminals are connected with the display area;
the control module is connected with the test terminal and used for controlling the test terminal to receive a test signal when the display panel is in a test stage; and after the display panel is combined into a display module, controlling the test terminal not to receive external signals.
2. The display panel according to claim 1,
the control module comprises at least one control unit, and the control unit corresponds to the test terminal.
3. The display panel according to claim 2,
the control unit comprises a transistor, the grid electrode of the transistor is connected with a control signal, the drain electrode of the transistor is connected with a corresponding test terminal, and the source electrode of the transistor is connected with the test signal.
4. The display panel according to claim 3,
when the display panel is in a test stage, the transistor is started;
and after the display panel is combined into a display module, the transistor is closed.
5. The display panel according to claim 3,
the display region includes a plurality of switching elements, which are formed simultaneously with the transistors.
6. The display panel according to claim 2,
the control units correspond to the test terminals one to one.
7. A display module comprising the display panel according to any one of claims 1 to 6.
8. The display module of claim 7,
the display module further comprises a driving chip, and the control signal is provided by the driving chip.
9. An electronic device, comprising the display module according to claim 7 or 8.
10. A manufacturing method of a display module is characterized by comprising the following steps:
manufacturing a display panel, wherein the display panel comprises a display area and a plurality of test terminals, the test terminals are positioned outside the display area, and the test terminals are connected with the display area;
controlling the test terminal to receive a test signal so as to test the display panel;
and combining the display panels into a display module to control the test terminal not to receive external signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010358220.7A CN111429796A (en) | 2020-04-29 | 2020-04-29 | Display panel, display module, manufacturing method of display module and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010358220.7A CN111429796A (en) | 2020-04-29 | 2020-04-29 | Display panel, display module, manufacturing method of display module and electronic device |
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| CN111429796A true CN111429796A (en) | 2020-07-17 |
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| CN202010358220.7A Pending CN111429796A (en) | 2020-04-29 | 2020-04-29 | Display panel, display module, manufacturing method of display module and electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114495778A (en) * | 2022-02-07 | 2022-05-13 | 深圳市华星光电半导体显示技术有限公司 | Detection method and detection equipment for array substrate |
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| CN101833910A (en) * | 2009-03-11 | 2010-09-15 | 上海天马微电子有限公司 | Display device and testing method of array substrate thereof |
| CN105070239A (en) * | 2015-08-27 | 2015-11-18 | 武汉华星光电技术有限公司 | Liquid crystal display panel |
| CN105590573A (en) * | 2016-03-24 | 2016-05-18 | 深圳市华星光电技术有限公司 | Repairing structure and repairing method for AMOLED display panel line defects |
| CN109841181A (en) * | 2017-11-24 | 2019-06-04 | 上海和辉光电有限公司 | Array substrate, display panel and display device |
| KR102002518B1 (en) * | 2018-04-27 | 2019-07-22 | 이승용 | Test socket and apparatus for testing FPCB(Flexible Printed Circuit Board) and display panel |
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2020
- 2020-04-29 CN CN202010358220.7A patent/CN111429796A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833910A (en) * | 2009-03-11 | 2010-09-15 | 上海天马微电子有限公司 | Display device and testing method of array substrate thereof |
| CN105070239A (en) * | 2015-08-27 | 2015-11-18 | 武汉华星光电技术有限公司 | Liquid crystal display panel |
| CN105590573A (en) * | 2016-03-24 | 2016-05-18 | 深圳市华星光电技术有限公司 | Repairing structure and repairing method for AMOLED display panel line defects |
| CN109841181A (en) * | 2017-11-24 | 2019-06-04 | 上海和辉光电有限公司 | Array substrate, display panel and display device |
| KR102002518B1 (en) * | 2018-04-27 | 2019-07-22 | 이승용 | Test socket and apparatus for testing FPCB(Flexible Printed Circuit Board) and display panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114495778A (en) * | 2022-02-07 | 2022-05-13 | 深圳市华星光电半导体显示技术有限公司 | Detection method and detection equipment for array substrate |
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Application publication date: 20200717 |
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