CN108376678A - Oled panel and the method for detecting cathode layer deviation - Google Patents
Oled panel and the method for detecting cathode layer deviation Download PDFInfo
- Publication number
- CN108376678A CN108376678A CN201810095540.0A CN201810095540A CN108376678A CN 108376678 A CN108376678 A CN 108376678A CN 201810095540 A CN201810095540 A CN 201810095540A CN 108376678 A CN108376678 A CN 108376678A
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- detection
- oled panel
- display area
- cathode layer
- detection terminal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/30—Structural arrangements specially adapted for testing or measuring during manufacture or treatment, or specially adapted for reliability measurements
- H01L22/32—Additional lead-in metallisation on a device or substrate, e.g. additional pads or pad portions, lines in the scribe line, sacrificed conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/24—Testing of discharge tubes
- G01R31/25—Testing of vacuum tubes
- G01R31/257—Testing of beam-tubes, e.g. cathode-ray tubes, image pick-up tubes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
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- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Embodiment of the invention discloses that a kind of oled panel and the method for detecting cathode layer deviation.The oled panel, including：Display area；Detection zone is located at the periphery of display area；Test side subgroup is located at detection zone, and test side subgroup includes multigroup detection terminal, and each group detection terminal includes the detection end towards display area, and the detection end of difference group detection terminal is different at a distance from the display area；Cathode layer positioned at display area and extends to the detection zone.Compared with prior art, the method of the cloudy layer deviation of oled panel and detection in the embodiment of the present invention, by the way that detection zone is arranged except the viewing area of oled panel, it is arranged from viewing area apart from different multigroup detection terminals in detection zone, by determining that cathode layer connect with those detection terminals the position to determine cathode layer in oled panel, and then determine whether cathode layer occurs deviation, prevent cathode layer deviation from causing oled panel can not normal use.
Description
Technical field
The invention belongs to display technology field more particularly to a kind of oled panel and the methods for detecting cathode layer deviation.
Background technology
Currently, Organic Light Emitting Diode OLED shows that equipment is more universal, it includes the faces OLED that this OLED, which shows equipment,
Plate, oled panel include glass substrate, the pixel on glass substrate and the cathode layer being electrically connected with these pixels.
Cathode layer is formed in generally by techniques such as vapor depositions on glass substrate in oled panel, and cathode layer is substantially in membranaceous is layed in
On glass substrate.Each pixel connection on cathode layer and glass substrate at this time, to control the working condition of these pixels.
However, in the prior art, if during cathode layer vapor deposition, there is deviation in the position of cathode layer, leads to cathode
Layer is not layed in the target area of glass substrate, certain pixels can be made there is no being connect with cathode layer, these pixels are then
It can not work normally, oled panel some regions is caused not show normally.
Invention content
A kind of method that the present invention provides oled panel and detects cathode layer deviation, to solve the above problems.
To solve the above problems, the present invention provides a kind of oled panels, including：
Display area；
Detection zone is located at the periphery of the display area；
Test side subgroup is located at the detection zone, and the test side subgroup includes multigroup detection terminal, each group test side
Son includes the detection end towards the display area, detection ends and the display area of difference group detection terminals away from
From difference；
Cathode layer positioned at the display area and extends to the detection zone.
Further, the test side subgroup includes first detection terminal nearest with display area distance, and described the
The detection end of one detection terminal is at a distance from the display area within the scope of the first pre-determined distance.
Further, the test side subgroup includes second detection terminal close with display area distance time, and described the
The detection end of two detection terminals is at a distance from the display area within the scope of the second pre-determined distance.
Further, the test side subgroup includes with the display area apart from farthest third detection terminal, and described
The detection end of three detection terminals is at a distance from the display area within the scope of third pre-determined distance.
Further, each group detection terminal has arragement direction in the test side subgroup, along the arragement direction, each group inspection
The detection end for surveying terminal is incremented by a distance from the display area.
Further, there is line of demarcation between the display area and the detection zone；The detection terminal, which has, to be extended
Direction, the extending direction are vertical with the line of demarcation.
Further, the cathode layer is connect at least one set of detection terminal.
Further, there are multiple sub- screens, the multiple sub- screen to be arranged in array in the viewing area of the oled panel.
Further, the head and end of every a line of the formed array of sub- screen is both provided with detection zone.
To solve the above problems, the invention also discloses a kind of method of detection cathode layer deviation, the detection method is answered
For the oled panel described in invention content, the described method comprises the following steps：
Measure the resistance value between every group of detection terminal；
According to the resistance value between every group of detection terminal, deviation shape of the cathode layer on the glass substrate is determined
State.
Compared with prior art, the method for oled panel of the invention and the cloudy layer deviation of detection, by oled panel
Viewing area except detection zone is set, in detection zone be arranged from viewing area apart from different multigroup detection terminals, pass through
It determines that cathode layer connect the position to determine cathode layer in oled panel with those detection terminals, and then whether determines cathode layer
Deviation occurs, prevents from causing oled panel can not normal use due to cathode layer deviation.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and constitutes the part of the present invention, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of schematic diagram of oled panel of the embodiment of the present invention.
Fig. 2 is a kind of flow diagram of the method for detection cathode layer deviation of the embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, in embodiments of the present invention, oled panel 10 can be applied to for example smart mobile phone, tablet computer,
Virtual reality device, enhancing are shown in all kinds of display equipment such as equipment.Oled panel 10 can be flexible panel, this flexible face
Plate can be bent into arbitrary shape.
Oled panel 10 includes viewing area 11 and the detection zone 12 except viewing area 11, is shown in oled panel
Pixel is generally placed in viewing area 11, so that viewing area 11 can show desired picture.Detection zone 12 is located at display
The periphery in region 11 can generally be cut when oled panel 10 is applied to display equipment, can be considered as the system of oled panel 10
Redundance caused by standby process.
In embodiments of the present invention, oled panel 10 further includes cathode layer 13 and test side subgroup 14, and cathode layer 13 can
It is formed on oled panel 10 with the process means for example, by vapor deposition.In general, cathode layer 13 is located in display area 11
And it can extend in detection zone 12.Also, the position in oled panel of cathode layer 13 is also more demanding, if cathode layer 13 exists
Position deviation is larger in oled panel 10, then certain pixels in display area 11 can be caused not connect with cathode layer, this
A little pixels then can not work normally.
Test side subgroup 14 is located in detection zone 12.Test side subgroup 14 may include multigroup detection terminal, these inspections
Survey terminal and will include the detection end (not labeled) towards display area 11, detection end refer in detection terminal with viewing area
Domain 11 is apart from nearest end (detection end is blocked and be not shown by cathode layer 13 in fig. 1).In embodiments of the present invention,
The detection end of difference group detection terminal is different at a distance from the display area 11.
Optionally, as an example, each group detection terminal has arragement direction D in the test side subgroup 14, along institute
Arragement direction D is stated, each group detection terminal is incremented by a distance from the display area.As another example, the display area
There is line of demarcation 15 between 11 and the detection zone 12；The detection terminal have extending direction L, the extending direction L with
The line of demarcation 15 is vertical.
Optionally, as another example, test side subgroup 14 includes the first detection terminal 141, the second detection terminal 142
And third detection terminal 143, the detection end of this three groups of detection terminals is different at a distance from display area 11 and successively increases.
The detection end of first detection terminal 141 is nearest at a distance from display area 11, the detection end of the second detection terminal 142 with it is aobvious
Show that the distance time in region 11 is nearly (i.e. second is close), the detection end of third detection terminal 143 is farthest at a distance from display area 11.
Wherein, the detection end of the first detection terminal 141 at a distance from the display area in the first pre-determined distance range
Interior, the second detection terminal 142 detection end is at a distance from the display area within the scope of the second pre-determined distance, third detection
The detection end of terminal 143 is at a distance from the display area within the scope of third pre-determined distance.
In general, cathode layer 13 extend to detection zone 12 distance it is bigger or too small, can think cathode layer 13
Deviation it is excessive, when only cathode layer 13 extends to the distance of detection zone 12 in some numberical range, just it is considered that the moon
Pole 13 deviation of layer are reasonable.Therefore, the first pre-determined distance range, the second pre-determined distance range and third pre-determined distance model here
It is to extend to the distance of detection zone 12 according to cathode layer 13 come preset to enclose, and can pass through the first detection terminal 141, second
The connection of detection terminal 142 and third detection terminal 143 and cathode layer 13, to determine that cathode layer 13 extends to detection zone
The distance in domain 12, and then it is inferred to the deviation degree of cathode layer 13.
Wherein, the first pre-determined distance range can be set according to the lower limit of 13 deviation of cathode layer, cathode layer 13 not with
First detection terminal 141 connects, it may be considered that cathode layer 13 is not at the target location of oled panel 10, cathode layer at this time
13 deviations are excessive, it is not possible to receive.Second pre-determined distance range can be set according to the upper limit of 13 deviation of cathode layer, in cathode
(since the first detection terminal 141 is opposite when layer 13 connect with the first detection terminal 141 but is not connect with the second detection terminal 142
The distance of display area 11 is closer to what cathode layer was connect with the second detection terminal 142 can connect before with the second detection terminal 142
Connect), it is believed that the deviation of cathode layer 13 can receive；Conversely, being connect with the first detection terminal 141 in cathode layer 13 and with
When two detection terminals 142 connect, it is believed that the deviation of cathode layer 13 is excessive, it is not possible to receive；Third pre-determined distance range can
To be set according to the warning value of 13 deviation of cathode layer, cathode layer 13 and the first detection terminal 141, the second detection terminal 142,
When third detection terminal 143 connects, then it is assumed that the deviation of cathode layer 13 can not receive completely, have excessive pixel can not be with cathode
Layer 13 connects, and needs to adjust evaporation process at this time, to reduce production loss.
Optionally, as another example, the quantity of oled panel could be provided as multiple and be arranged in array, at this time
The formed whole plate of oled panel can be understood as the form before oled panel cutting.The formed array of oled panel it is each
Capable head and end is both provided with detection zone 12, and cathode layer 13 on the oled panel of full line can be determined by this detection zone 12
Deviation degree, improve detection efficiency.
To sum up, the oled panel in the embodiment of the present invention, by the way that detection zone is arranged except the viewing area of oled panel,
Setting is connected by determining cathode layer with those detection terminals from viewing area apart from different multigroup detection terminals in detection zone
Position of the determining cathode layer in oled panel is fetched, and then determines whether cathode layer occurs deviation, prevents cathode layer deviation from leading
Cause oled panel can not normal use.
Fig. 2 is a kind of flow diagram of the method for detection cathode layer deviation of the embodiment of the present invention.This method can answer
With to the oled panel mentioned in foregoing teachings, with the deviation situation of cathode layer in this oled panel of determination.This method can
To include the following steps.
Resistance value between every group of step 101, measurement detection terminal.
When a certain group of detection terminal is connect with cathode layer 13, can measure this group of detection terminal has resistance value；At certain
When one group of detection terminal is not connect with cathode layer 13, this group of detection terminal is equivalent to open circuit, can measure this group of detection terminal
Resistance value is infinitely great.
Step 102, according to the resistance value between every group of detection terminal, determine the cathode layer on the glass substrate
Deviation state.
Distance due to each group detection terminal relative to display area is different, according to the electricity between every group of detection terminal
Resistance value, it may be determined that cathode layer 13 is connect with which group detection terminal, and then according to these detection terminals on detection zone 12
Arrangement, it may be determined that deviation state of the cathode layer on the glass substrate.
For example, cathode layer 13 is not connect with the first detection terminal 141, it may be considered that cathode layer 13 is not at OLED
The target location of panel 10,13 deviation of cathode layer is excessive at this time, it is not possible to receive.For another example cathode layer 13 and the first test side
Son 141 is connected but is not connect with the second detection terminal 142, it may be considered that the deviation of cathode layer 13 can receive.
To sum up, the method that cloudy layer deviation is detected in the embodiment of the present invention, by being arranged except the viewing area of oled panel
Detection zone is arranged from viewing area apart from different multigroup detection terminals in detection zone, passes through and determine cathode layer and those
Detection terminal connects to determine position of the cathode layer in oled panel, and then determines whether cathode layer occurs deviation, prevents the moon
Pole layer deviation causes oled panel can not normal use.
Above-described specific example has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
Illustrate, it should be understood that the above is only a specific embodiment of the present invention, be not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of oled panel, which is characterized in that including：
Display area；
Detection zone is located at the periphery of the display area；
Test side subgroup is located at the detection zone, and the test side subgroup includes multigroup detection terminal, and each group detection terminal is equal
Include the detection end towards the display area, difference group detection terminals detection ends at a distance from the display area not
Together；
Cathode layer positioned at the display area and extends to the detection zone.
2. oled panel according to claim 1, which is characterized in that the test side subgroup include with the display area away from
From the first nearest detection terminal, the detection end of first detection terminal is default first at a distance from the display area
In distance range.
3. oled panel according to claim 2, which is characterized in that the test side subgroup include with the display area away from
From secondary the second close detection terminal, the detection end of second detection terminal is default second at a distance from the display area
In distance range.
4. oled panel according to claim 3, which is characterized in that the test side subgroup include with the display area away from
From farthest third detection terminal, the detection end of the third detection terminal is default in third at a distance from the display area
In distance range.
5. according to oled panel described in any one of claims 1 to 4, which is characterized in that each group is examined in the test side subgroup
Surveying terminal has arragement direction, and along the arragement direction, the detection end of each group detection terminal is at a distance from the display area
It is incremented by.
6. according to oled panel described in any one of claims 1 to 4, which is characterized in that the display area and the detection
There is line of demarcation between region；The detection terminal has extending direction, the extending direction vertical with the line of demarcation.
7. according to oled panel described in any one of claims 1 to 4, which is characterized in that the cathode layer is examined at least one set of
Survey terminal connection.
8. according to oled panel described in any one of claims 1 to 4, which is characterized in that in the viewing area of the oled panel
With multiple sub- screens, the multiple sub- screen is arranged in array.
9. oled panel according to claim 8, which is characterized in that the first and last two of every a line of sub- the formed array of screen
End is both provided with detection zone.
10. a kind of method of detection cathode layer deviation, which is characterized in that the detection method is applied to as in claim 1 to 9
Any one of them oled panel, the described method comprises the following steps：
Measure the resistance value between every group of detection terminal；
According to the resistance value between every group of detection terminal, deviation state of the cathode layer on the glass substrate is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095540.0A CN108376678B (en) | 2018-01-31 | 2018-01-31 | Oled panel and the method for detecting cathode layer deviation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095540.0A CN108376678B (en) | 2018-01-31 | 2018-01-31 | Oled panel and the method for detecting cathode layer deviation |
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| Publication Number | Publication Date |
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| CN108376678A true CN108376678A (en) | 2018-08-07 |
| CN108376678B CN108376678B (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810095540.0A Active CN108376678B (en) | 2018-01-31 | 2018-01-31 | Oled panel and the method for detecting cathode layer deviation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050116657A1 (en) * | 2003-11-27 | 2005-06-02 | Sung-Chon Park | Power control apparatus for a display device and method of controlling the same |
| CN1746735A (en) * | 2004-09-09 | 2006-03-15 | 三星电子株式会社 | Display device and manufacture method thereof |
| JP2007165748A (en) * | 2005-12-16 | 2007-06-28 | Seiko Epson Corp | Light emitting device, its manufacturing method, display device, and image formation apparatus |
| CN101669217A (en) * | 2007-06-21 | 2010-03-10 | 夏普株式会社 | Photodetector and display device provided with same |
-
2018
- 2018-01-31 CN CN201810095540.0A patent/CN108376678B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050116657A1 (en) * | 2003-11-27 | 2005-06-02 | Sung-Chon Park | Power control apparatus for a display device and method of controlling the same |
| CN1746735A (en) * | 2004-09-09 | 2006-03-15 | 三星电子株式会社 | Display device and manufacture method thereof |
| JP2007165748A (en) * | 2005-12-16 | 2007-06-28 | Seiko Epson Corp | Light emitting device, its manufacturing method, display device, and image formation apparatus |
| CN101669217A (en) * | 2007-06-21 | 2010-03-10 | 夏普株式会社 | Photodetector and display device provided with same |
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| Publication number | Publication date |
|---|---|
| CN108376678B (en) | 2019-11-05 |
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