CN111261055B - OLED display screen and OLED display device - Google Patents
OLED display screen and OLED display device Download PDFInfo
- Publication number
- CN111261055B CN111261055B CN202010070582.6A CN202010070582A CN111261055B CN 111261055 B CN111261055 B CN 111261055B CN 202010070582 A CN202010070582 A CN 202010070582A CN 111261055 B CN111261055 B CN 111261055B
- Authority
- CN
- China
- Prior art keywords
- pad
- signal
- display panel
- test
- oled display
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention provides an OLED display screen and an OLED display device, wherein the OLED display screen comprises a display panel and a control circuit for controlling the working state of the display panel, and the control circuit comprises a pixel driving circuit, a driving chip and an electric connection element; the display panel comprises a test pad, and the driving chip is arranged on the display panel; the test pad is electrically connected with the pixel driving circuit, and the driving chip is electrically connected with the pixel driving circuit through the electric connecting element. The driving chip is connected with the pixel driving circuit through the electric connecting element, the electric connection between the driving chip and the pixel driving circuit can be disconnected only by removing the electric connecting element when the display screen is electrically tested, so that a test signal can not pass through the driving chip when the display screen is electrically tested, the driving chip is not required to be removed, the test process can be simplified, an abnormal part can be quickly and accurately detected, failure reasons can be analyzed, and the detection efficiency is improved.
Description
Technical Field
The invention relates to the field of display, in particular to an OLED display screen and an OLED display device.
Background
In order to achieve a more extreme overall screen effect, a cop (chip On pi) packaging technology is gradually adopted for the flexible OLED display screen. The COP packaging technology is to directly bond a driving chip (IC) to a display panel by a certain temperature and pressure, and then bond a flexible circuit board. The product may have failure problems in subsequent electrical Test, reliability Test or production process, and Cell Test is often performed after the flexible circuit board is removed to determine whether the failure reason is the abnormality of the driving chip and the flexible circuit board or the abnormality of the OLED display screen.
Referring to fig. 1, when Cell Test is performed, since the control signal line of the driving chip 3A is electrically connected to the pixel driving circuit 2A, at this time, it is realized that the MOS transistor (MOSFET, and element inside the driving chip) of the logic circuit connected to the control signal line (the part of the line circled by the dotted line) output by the driving chip 3A is in a non-high impedance state, and the Cell Test device 5A is prone to damage and burn the control signal line when the Test signal is strongly applied, resulting in Cell Test failure. In order to avoid the influence of the driver chip on the Cell Test, it is feasible to remove the driver chip, but it is difficult to ensure that the pixel driving circuit is intact while removing the driver chip.
Disclosure of Invention
The invention provides an OLED display screen and an OLED display device for improving detection efficiency.
The invention provides an OLED display screen, which comprises a display panel and a control circuit for controlling the working state of the display panel, wherein the control circuit comprises a pixel driving circuit, a driving chip and an electric connection element; the display panel comprises a test pad, and the driving chip is arranged on the display panel; the test pad is electrically connected with the pixel driving circuit, and the driving chip is electrically connected with the pixel driving circuit through the electric connecting element.
Further, the driver chip includes a signal input terminal and a signal output terminal, the display panel includes a first signal pad electrically connected to the signal output terminal, the electrical connection element is a flexible circuit board and includes a conductive circuit, the conductive circuit is electrically connected to the test pad and the first signal pad, and the driver chip is electrically connected to the pixel driving circuit through the first signal pad, the conductive circuit and the test pad.
Further, the conductive trace includes a first pad, a second pad, and a metal lead electrically connecting the first pad and the second pad, the first pad is electrically connected to the test pad, and the second pad is electrically connected to the first signal pad.
Further, the signal input end and the signal output end are located on one side of the driving chip close to the first signal pad; or the signal input end is positioned at one side of the driving chip close to the first signal pad, and the signal output end is positioned at one side of the driving chip far away from the first signal pad.
Further, the driver chip includes a signal input terminal and a signal output terminal, the display panel includes a first signal pad electrically connected to the signal output terminal of the driver chip and a second signal pad electrically connected to a circuit between the pixel driver circuit and the test pad, the electrical connection element is a flexible circuit board and includes a conductive trace, and the conductive trace is electrically connected to the first signal pad and the second signal pad.
Further, the conductive trace includes a first pad, a second pad, and a metal lead electrically connecting the first pad and the second pad, the first pad is electrically connected to the test pad, and the second pad is electrically connected to the first signal pad.
Further, the display panel includes two first signal pads and two second signal pads, and the two first signal pads are located between the two second signal pads.
Further, the display panel includes a third signal pad electrically connected to the signal input terminal, and the flexible circuit board includes a fourth pad electrically contacting the third signal pad.
Further, the display panel comprises two first signal pads, a plurality of third signal pads and two test pads, wherein the third signal pads are located between the two first signal pads, and the first signal pads are located between the two test pads.
The invention also provides an OLED display device which comprises the OLED display screen.
According to the invention, the connection between the driving chip and the pixel driving circuit is realized through the electric connecting element, and the electric connection between the driving chip and the pixel driving circuit can be disconnected only by dismounting the electric connecting element when the display screen is electrically tested, so that a test signal can not pass through the driving chip when the display screen is electrically tested, the driving chip is not required to be dismounted, the test process can be simplified, the abnormal part can be rapidly and accurately detected, the failure reason can be analyzed, and the detection efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
FIG. 1 is a schematic diagram of a prior art electrical test for a display screen.
Fig. 2 is a schematic diagram of a first embodiment of an OLED display panel of the present invention.
Fig. 3 is a schematic diagram of a display panel, a pixel driving circuit and a driving chip of the OLED display panel shown in fig. 2.
Fig. 4 is a schematic view of electrical connection elements of the OLED display panel shown in fig. 2.
FIG. 5 is a schematic circuit diagram of the OLED display panel shown in FIG. 2 for performing electrical testing of the display panel.
FIG. 6 is a schematic diagram of a second embodiment of an OLED display screen according to the present invention.
Fig. 7 is a schematic diagram of the display panel, the pixel driving circuit and the driving chip of the OLED display panel shown in fig. 6.
FIG. 8 is a schematic view of electrical connection elements of the OLED display screen shown in FIG. 6.
FIG. 9 is a schematic diagram of a third embodiment of the control circuit of the OLED display panel of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
The invention provides an OLED display screen, which comprises a display panel and a control circuit for controlling the working state of the display panel, wherein the control circuit comprises a pixel driving circuit, a driving chip and an electric connection element; the display panel comprises a test pad, and the driving chip is arranged on the display panel; the test pad is electrically connected with the pixel driving circuit, and the driving chip is electrically connected with the pixel driving circuit through the electric connecting element. The driving chip is connected with the pixel driving circuit through the electric connecting element, the electric connection between the driving chip and the pixel driving circuit can be disconnected only by removing the electric connecting element when the display screen is electrically tested, and the test signal can not pass through the driving chip, so that the driving chip is not required to be removed, the test process can be simplified, the abnormal part can be quickly and accurately detected out, the failure reason can be analyzed, and the detection efficiency is improved.
Referring to fig. 2 to 4, in the present embodiment, the OLED display includes a display panel 1 (fig. 2 shows a bonding area, the display area is not shown), a pixel driving circuit 2, a driving chip 3, and an electrical connection element 4, wherein the pixel driving circuit 2 and the driving chip 3 are disposed on the display panel 1, and the electrical connection element 4 is connected to the display panel 1, for example, by welding, to achieve mechanical connection and electrical connection. The pixel driving circuit 2 is used for electrically connecting with electrodes (such as a cathode and an anode) of pixels inside the OLED display screen.
In this embodiment, the display panel 1 includes a test pad 10, a first signal pad 11, a second signal pad 12, and a third signal pad 13. The number of the test pads 10, the first signal pads 11 and the second signal pads 12 is two, and the number of the third signal pads 13 is multiple. The test pads 10 are electrically connected to the pixel driving circuit 2, the first signal pads 11 and the third signal pads 13 are electrically connected to the driving chip 3, and the second signal pads 12 are electrically connected to a circuit between the pixel driving circuit 2 and the test pads 10.
The driving chip 3 includes a plurality of signal input terminals and two signal output terminals, and the signal input terminals and the signal output terminals are located on one side of the driving chip 3 close to the first signal pad 11, so as to facilitate simplifying wiring on the display panel 1. The first signal pad 11 is electrically connected to the signal output terminal, and the third signal pad 13 is electrically connected to the signal input terminal.
The test pads 10, the first signal pads 11, the second signal pads 12 and the third signal pads 13 are arranged in a row, the third signal pads 13 are located between two first signal pads 11, two first signal pads 11 are located between two second signal pads 12, and two second signal pads 12 are located between two test pads 10. Optionally, the distance between the test pad 10 and the adjacent second signal pad 12 is greater than the distance between the first signal pad 11 and the adjacent second signal pad 12, and is greater than the distance between the first signal pad 11 and the adjacent third signal pad 13, and is also greater than the distance between the adjacent two third signal pads 13. The two test pads 10 are positioned on the outermost side, so that wiring is convenient to perform during electrical test of the display screen, and the test probe is prevented from being in short circuit with other pads to influence the test accuracy; a larger distance between the test pad 10 and the adjacent second signal pad 12 may further reduce the likelihood of shorting.
The first signal pad 11 is electrically connected to the second signal pad 12 through the electrical connection element 4, so as to electrically connect the signal output terminal of the driving chip 3 to the pixel driving circuit 2. In this embodiment, the electrical connection element 4 is a flexible circuit board, the flexible circuit board includes a conductive trace 40 and a fourth pad 41, and the conductive trace 40 electrically connects the first signal pad 11 and the second signal pad 12. The conductive trace 40 includes a first pad 401, a second pad 402, a third pad 403, and a metal lead 404 electrically connecting the second pad 402 and the third pad 403, wherein the first pad 401 is electrically connected to the test pad 10, the second pad 402 is electrically connected to the first signal pad 11, the third pad 403 is electrically connected to the second signal pad 12, and the fourth pad 41 is electrically connected to the third signal pad 13. Optionally, the electrical contact is achieved by soldering. In this embodiment, the first pad 401, the second pad 402, the third pad 403, and the fourth pad 41 are all copper foils, and the metal lead 404 is a copper trace. Of course, the first spacer 401 may not be provided in this embodiment. In other embodiments, the electrical connection element may be replaced by an element capable of achieving electrical connection, such as a flexible cable.
The first signal pad 11 and the second signal pad 12 are electrically connected through the second pad 402, the third pad 403 and the metal lead 404, and the test pad 10 is electrically connected with the driving chip 3 through the first signal pad 11 and the second signal pad 12, so that when performing an electrical test of the display screen, the electrical connection between the driving chip 3 and the pixel driving circuit 2 can be disconnected only by removing the electrical connection element 4, and the test signal does not pass through the driving chip 3, so that the driving chip 3 does not need to be removed. Referring to fig. 5, after the electrical connection element 4 is removed, the Cell Test device 5 is used to Test the pixel, and the driving chip 3 does not need to be removed, so that the Test process is simplified, the abnormal part is quickly and accurately detected, the failure reason is analyzed, and the detection efficiency is improved.
Referring to fig. 6 to 8, in a second embodiment, the display panel 1 includes a test pad 10, a first signal pad 11 and a third signal pad 13, but the second signal pad is not provided. The number of the test pads 10 and the number of the first signal pads 11 are both two, the number of the third signal pads 13 is multiple, the third signal pads 13 are located between the two first signal pads 11, and the first signal pads 11 are located between the two test pads 10.
The driving chip 3 comprises a plurality of signal input ends and two signal output ends, the signal input ends are located at one side, close to the first signal pad 11, of the driving chip 3, and the signal output ends are located at one side, far away from the first signal pad 11, of the driving chip 3. The first signal pad 11 is electrically connected to the signal output terminal and the test pad 10, and the third signal pad 13 is electrically connected to the signal input terminal. The driving chip 3 is electrically connected to the pixel driving circuit 2 through the first signal pad 11, the conductive trace 40 and the test pad 10.
The first signal pads 11 are electrically connected to the test pads 10 through the conductive traces 40. In this embodiment, the conductive line 40 includes a first pad 401, a second pad 402, and a metal lead 404 electrically connecting the first pad 401 and the second pad 402. The first pad 401 is electrically contacted with the test pad 10, and the second pad 402 is electrically contacted with the first signal pad 11, so that the first signal pad 11 is electrically connected with the test pad 10. The fourth pad 41 is electrically contacted with the third signal pad 13, so that signal input to the driving chip is realized.
The first signal pad 11 and the test pad 10 are electrically connected through the first pad 401, the second pad 402 and the metal lead 404, so that the driving chip 3 electrically connected with the first signal pad 11 is electrically connected to the pixel driving circuit 2, therefore, when the display screen is electrically tested, only the electric connecting element 4 needs to be removed, the electric connection between the driving chip and the pixel driving circuit can be disconnected, the test signal can not pass through the driving chip 3, the driving chip 3 does not need to be removed, the test process is facilitated to be simplified, the abnormal part can be quickly and accurately detected, the failure reason can be analyzed, and the detection efficiency is improved.
Referring to fig. 9, in the third embodiment, the structure of the control circuit is substantially similar to that of the control circuit shown in fig. 6, and the difference is mainly that the signal input terminal and the signal output terminal of the driving chip 3 are both located at a side of the driving chip 3 close to the first signal pad 11, thereby facilitating the wiring. The same structure of the OLED display panel of this embodiment as that of the OLED display panel shown in fig. 6 will not be described again
In addition, the invention also provides an OLED display device which comprises the OLED display screen according to any one of the foregoing embodiments. The OLED display device is, for example, an electronic device having a display screen, such as a mobile phone, a tablet computer, a notebook computer, a television, a display, and the like.
According to the invention, the connection between the driving chip and the pixel driving circuit is realized through the electric connecting element, the electric connection between the driving chip and the pixel driving circuit can be disconnected only by dismounting the electric connecting element when the display screen is electrically tested, and the test signal can not pass through the driving chip, so that the driving chip is not required to be dismounted, the testing process can be simplified, the abnormal part can be rapidly and accurately detected, the failure reason can be analyzed, and the detection efficiency is improved.
Although the present invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The OLED display screen is characterized by comprising a display panel and a control circuit for controlling the working state of the display panel, wherein the control circuit comprises a pixel driving circuit, a driving chip and an electric connection element;
the display panel comprises a test pad, and the driving chip is arranged on the display panel;
the test pad is electrically connected with the pixel driving circuit, and the driving chip is electrically connected with the pixel driving circuit through the electric connecting element;
the drive chip comprises a signal input end and a signal output end, the display panel comprises a first signal pad electrically connected with the signal output end, the electric connecting element is a flexible circuit board and comprises a conductive circuit, the conductive circuit is electrically connected with the test pad and the first signal pad, and the drive chip is electrically connected with the pixel drive circuit through the first signal pad, the conductive circuit and the test pad.
2. The OLED display panel of claim 1, wherein the conductive traces include a first pad, a second pad, and metal leads electrically connecting the first pad and the second pad, the first pad being in electrical contact with the test pad, the second pad being in electrical contact with the first signal pad.
3. The OLED display screen of claim 1, wherein the signal input and output terminals are located on a side of the driver chip adjacent to the first signal pads;
or the signal input end is positioned at one side of the driving chip close to the first signal pad, and the signal output end is positioned at one side of the driving chip far away from the first signal pad.
4. The OLED display screen of claim 1, wherein the display panel includes a second signal pad electrically connected to circuitry between the pixel driving circuitry and the test pad, the conductive trace electrically connecting the first signal pad and the second signal pad.
5. The OLED display screen of claim 4, wherein the conductive traces comprise a first pad, a second pad, and metal leads electrically connecting the first pad and the second pad, the first pad being in electrical contact with the test pad, the second pad being in electrical contact with the first signal pad.
6. The OLED display screen of claim 4, wherein the display panel comprises two first signal pads and two second signal pads, the two first signal pads being located between the two second signal pads.
7. The OLED display screen of any one of claims 1 to 6, wherein the display panel comprises a third signal pad electrically connected to the signal input, and the flexible circuit board comprises a fourth pad electrically contacting the third signal pad.
8. The OLED display screen of claim 7, wherein the display panel comprises two first signal pads, a plurality of third signal pads, and two test pads, the third signal pads being between the two first signal pads, the first signal pads being between the two test pads.
9. An OLED display device, comprising the OLED display screen according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070582.6A CN111261055B (en) | 2020-01-21 | 2020-01-21 | OLED display screen and OLED display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070582.6A CN111261055B (en) | 2020-01-21 | 2020-01-21 | OLED display screen and OLED display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111261055A CN111261055A (en) | 2020-06-09 |
| CN111261055B true CN111261055B (en) | 2022-02-22 |
Family
ID=70947925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010070582.6A Active CN111261055B (en) | 2020-01-21 | 2020-01-21 | OLED display screen and OLED display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111261055B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022126467A1 (en) * | 2020-12-17 | 2022-06-23 | 京东方科技集团股份有限公司 | Flexible printed circuit board and display touch device |
Citations (16)
| 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 method for testing array substrate of display device |
| CN101963709A (en) * | 2009-07-21 | 2011-02-02 | 乐金显示有限公司 | Chip on glass type LCD device and detection method of the same |
| CN103578357A (en) * | 2012-07-25 | 2014-02-12 | 乐金显示有限公司 | Plastic panel and flat panel display device using the same |
| KR20150078559A (en) * | 2013-12-31 | 2015-07-08 | 삼성디스플레이 주식회사 | Display device |
| CN104916242A (en) * | 2014-03-14 | 2015-09-16 | 群创光电股份有限公司 | Display device and test pad thereof |
| CN105938698A (en) * | 2015-03-04 | 2016-09-14 | 三星显示有限公司 | Display panel and method of testing the same |
| CN106066560A (en) * | 2016-08-17 | 2016-11-02 | 武汉华星光电技术有限公司 | The test circuit of a kind of array base palte and liquid crystal display |
| CN106782250A (en) * | 2017-01-16 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of display panel, its detection method and display device |
| CN106875879A (en) * | 2017-04-24 | 2017-06-20 | 上海天马有机发光显示技术有限公司 | A kind of display panel, electronic equipment and method of testing |
| CN107589612A (en) * | 2017-10-24 | 2018-01-16 | 惠科股份有限公司 | A kind of array base palte and display panel |
| CN108206007A (en) * | 2016-12-19 | 2018-06-26 | 乐金显示有限公司 | Display device and its calibration method |
| CN207781148U (en) * | 2018-01-03 | 2018-08-28 | 合肥京东方光电科技有限公司 | A kind of abnormality detection structure, display panel and display device |
| CN108565278A (en) * | 2018-02-28 | 2018-09-21 | 京东方科技集团股份有限公司 | Array substrate motherboard, array substrate, display device and preparation method thereof |
| CN109509416A (en) * | 2018-12-19 | 2019-03-22 | 惠科股份有限公司 | Show driving plate and display device |
| CN109697938A (en) * | 2019-01-24 | 2019-04-30 | 京东方科技集团股份有限公司 | Display panel, preparation method, detection method and display device |
| CN110189672A (en) * | 2019-06-27 | 2019-08-30 | 京东方科技集团股份有限公司 | A kind of display panel, its detection method and display device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003050380A (en) * | 2001-08-07 | 2003-02-21 | Toshiba Corp | Method for inspecting array substrate |
| DE10227332A1 (en) * | 2002-06-19 | 2004-01-15 | Akt Electron Beam Technology Gmbh | Control device with improved test properties |
| CN101515430B (en) * | 2009-03-30 | 2011-01-05 | 友达光电股份有限公司 | Display panel and line inspection method thereof |
| KR101113476B1 (en) * | 2010-03-10 | 2012-03-02 | 삼성모바일디스플레이주식회사 | Liquid Crystal Display |
| CN202434175U (en) * | 2011-12-28 | 2012-09-12 | 深圳市宇顺电子股份有限公司 | Improved universal test adapter plate for liquid crystal display |
| KR102037206B1 (en) * | 2013-04-03 | 2019-10-29 | 삼성디스플레이 주식회사 | Organic light emitting display device and method of inspecting the same |
| CN105761653A (en) * | 2016-03-18 | 2016-07-13 | 信利（惠州）智能显示有限公司 | Detection method and detection device for display panel |
| CN107680522B (en) * | 2017-09-30 | 2021-01-22 | 京东方科技集团股份有限公司 | Display panel detection method and device |
-
2020
- 2020-01-21 CN CN202010070582.6A patent/CN111261055B/en active Active
Patent Citations (16)
| 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 method for testing array substrate of display device |
| CN101963709A (en) * | 2009-07-21 | 2011-02-02 | 乐金显示有限公司 | Chip on glass type LCD device and detection method of the same |
| CN103578357A (en) * | 2012-07-25 | 2014-02-12 | 乐金显示有限公司 | Plastic panel and flat panel display device using the same |
| KR20150078559A (en) * | 2013-12-31 | 2015-07-08 | 삼성디스플레이 주식회사 | Display device |
| CN104916242A (en) * | 2014-03-14 | 2015-09-16 | 群创光电股份有限公司 | Display device and test pad thereof |
| CN105938698A (en) * | 2015-03-04 | 2016-09-14 | 三星显示有限公司 | Display panel and method of testing the same |
| CN106066560A (en) * | 2016-08-17 | 2016-11-02 | 武汉华星光电技术有限公司 | The test circuit of a kind of array base palte and liquid crystal display |
| CN108206007A (en) * | 2016-12-19 | 2018-06-26 | 乐金显示有限公司 | Display device and its calibration method |
| CN106782250A (en) * | 2017-01-16 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of display panel, its detection method and display device |
| CN106875879A (en) * | 2017-04-24 | 2017-06-20 | 上海天马有机发光显示技术有限公司 | A kind of display panel, electronic equipment and method of testing |
| CN107589612A (en) * | 2017-10-24 | 2018-01-16 | 惠科股份有限公司 | A kind of array base palte and display panel |
| CN207781148U (en) * | 2018-01-03 | 2018-08-28 | 合肥京东方光电科技有限公司 | A kind of abnormality detection structure, display panel and display device |
| CN108565278A (en) * | 2018-02-28 | 2018-09-21 | 京东方科技集团股份有限公司 | Array substrate motherboard, array substrate, display device and preparation method thereof |
| CN109509416A (en) * | 2018-12-19 | 2019-03-22 | 惠科股份有限公司 | Show driving plate and display device |
| CN109697938A (en) * | 2019-01-24 | 2019-04-30 | 京东方科技集团股份有限公司 | Display panel, preparation method, detection method and display device |
| CN110189672A (en) * | 2019-06-27 | 2019-08-30 | 京东方科技集团股份有限公司 | A kind of display panel, its detection method and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111261055A (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10321559B2 (en) | Display device and method for detecting bonding condition in bonding area of display device | |
| JP2018128672A (en) | Chip-on film package, display panel, and display device | |
| CN111308815B (en) | Array substrate and display panel | |
| WO2014046099A1 (en) | Image display apparatus and mounting inspection method for same | |
| CN101246832A (en) | Method of manufacturing a semiconductor integrated circuit device | |
| CN1963600A (en) | Liquid crystal display panel | |
| CN112256148B (en) | Display device, display panel and detection method thereof | |
| JP2009244077A (en) | Substrate inspection device and method | |
| CN111261055B (en) | OLED display screen and OLED display device | |
| WO2022056961A1 (en) | Display cell and electronic device | |
| CN103675581A (en) | Electrical connection component and detection method thereof | |
| CN102998576B (en) | Connector connection checking circuit and method, display device and manufacturing method thereof | |
| CN108931697B (en) | Method and device for detecting welding effect of keyboard interface | |
| US8324908B2 (en) | Electrical connection defect detection device | |
| EP4030413A1 (en) | Display apparatus, preparation method for display apparatus, and electronic device | |
| CN107515497B (en) | Display device | |
| US11860204B2 (en) | Display device and detection method for impedance of display device | |
| KR20160099985A (en) | Driving integrated circuit chip and display device having a driving integrated circuit chip | |
| CN109901334B (en) | Array substrate, display device and binding state detection method thereof | |
| CN107507549B (en) | Test method and test system for display panel | |
| JP3853729B2 (en) | Flexible printed wiring board connection structure and connection method | |
| JP2011249527A (en) | Circuit module | |
| CN212723204U (en) | Test circuit board and test system | |
| CN110672998B (en) | Conduction and withstand voltage test method and conduction and withstand voltage test assembly of connector | |
| TWI486598B (en) | Electrical connection assembly and testing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |