CN106405899B - The test structure and test method of liquid crystal display panel - Google Patents
The test structure and test method of liquid crystal display panel Download PDFInfo
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- CN106405899B CN106405899B CN201611099360.7A CN201611099360A CN106405899B CN 106405899 B CN106405899 B CN 106405899B CN 201611099360 A CN201611099360 A CN 201611099360A CN 106405899 B CN106405899 B CN 106405899B
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- short bar
- pad
- liquid crystal
- crystal display
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- 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
Abstract
The present invention discloses the test structure and test method of a kind of liquid crystal display panel.The test structure includes pad and connect with pad and along being parallel to first group of short bar, second group of short bar and third group short bar that the grid line direction of liquid crystal display panel is set gradually, unique spacer is arranged between first group of short bar, second group of short bar and third group short bar, respectively by applying GOA signal to liquid crystal display panel with the pad respectively connecting, second group of short bar applies grayscale signal to liquid crystal display panel by pad connected to it for first group of short bar and third group short bar.The present invention can be conducive to the narrow frame design of LCD.
Description
Technical field
The present invention relates to technical field of liquid crystal display, in particular to a kind of test structure of liquid crystal display panel and survey
Method for testing.
Background technique
LCD (Liquid Crystal Display, liquid crystal display) is mesh due to the advantages that its is lightening and low-power consumption
Mainstream display device in preceding market, and in process of producing product, in order to improve product yield, it is necessary to LCD display
Structure or test circuit (are tested) in plate setting test at box test or liquid crystal display panel, to carry out Cell test after at box processing procedure.
In current structure design, as shown in Figure 1, being located at routing region (the Outer Lead of liquid crystal display panel
Bonding, OLB, also known as outer lead welding region) test structure include testing cushion 11, pad 12 and short bar
(shorting bar)13.The testing cushion 11 for being set to the left and right sides receives gray scale voltage, and passing through short bar 13, cabling 14 will
Gray scale voltage is transferred to pad 12, and final output is to liquid crystal display panel.But when using GOA (Gate Driver on Array,
The driving of array substrate row) technology when, liquid crystal display panel can increase in routing region much to transmit the cabling of GOA signal,
These cablings are connected to testing cushion 11 by short bar 13, and as shown in connection with fig. 2, this just needs to increase considerably the width of short bar 13
Degree, therefore will increase routing region, it is clear that it is unfavorable for the narrow frame design of liquid crystal display panel.
Summary of the invention
In view of this, the embodiment of the present invention provides the test structure and test method of a kind of liquid crystal display panel, Neng Gouyou
Conducive to the narrow frame design of liquid crystal display panel.
The test structure of the liquid crystal display panel of one embodiment of the invention, positioned at the routing region of liquid crystal display panel, and
The first group of short circuit for connecting including pad and with pad and being set gradually along the grid line direction for being parallel to liquid crystal display panel
Stick, second group of short bar and third group short bar, it is independent between first group of short bar, second group of short bar and third group short bar
Interval setting, first group of short bar and third group short bar with the pad respectively connecting to liquid crystal display panel respectively by applying
GOA signal, second group of short bar apply grayscale signal to liquid crystal display panel by pad connected to it.
Wherein, the test structure further includes multiple groups testing cushion, and the pad connecting with second group of short bar includes multiple groups
Pad, multiple groups testing cushion are staggered with the sub- pad of multiple groups, are respectively adjacent to two groups of first group of short bar and third group short bar
Sub- pad is by receiving grayscale signal with one group of testing cushion respectively connecting, and the sub- pad of remaining each group is by being located at respective two sides
Two groups of testing cushions receive grayscale signal.
Wherein, first group of short bar and third group short bar pass through the first cabling and corresponding sub- pad and testing cushion respectively
Connection, second group of short bar are connected by the second cabling with corresponding sub- pad and testing cushion, and the impedance of the first cabling is equal to the
The half of the impedance of two cablings.
Wherein, first group of short bar and third group short bar and pad or second group of short bar same layer are arranged.
Wherein, one of first group of short bar and third group short bar and the odd number horizontal scanning line of liquid crystal display panel connect
It connects, the even number horizontal scanning line connection of another one and liquid crystal display panel.
The test method of the liquid crystal display panel of one embodiment of the invention, applied to the cabling area for being located at liquid crystal display panel
The test structure in domain, the test structure include pad and connects with pad and edge is parallel to the grid line of liquid crystal display panel
First group of short bar, second group of short bar and the third group short bar that direction is set gradually, first group of short bar, second group of short circuit
Unique spacer is arranged between stick and third group short bar, and the test method includes: first group of short bar and third group short bar
Respectively by applying GOA signal to liquid crystal display panel with the pad respectively connecting；Second group of short bar passes through connected to it
Pad applies grayscale signal to liquid crystal display panel.
Wherein, the test structure further includes multiple groups testing cushion, and the pad connecting with second group of short bar includes multiple groups
Pad, multiple groups testing cushion are staggered with the sub- pad of multiple groups, and second group of short bar passes through pad connected to it to liquid crystal
Display panel applies the step of grayscale signal, comprising: is respectively adjacent to two groups of sons weldering of first group of short bar and third group short bar
Disk is by receiving grayscale signal with one group of testing cushion respectively connecting, and the sub- pad of remaining each group is by being located at the two of respective two sides
Group testing cushion receives grayscale signal.
Wherein, first group of short bar and third group short bar pass through the first cabling and corresponding sub- pad and testing cushion respectively
Connection, second group of short bar are connected by the second cabling with corresponding sub- pad and testing cushion, and the impedance of the first cabling is equal to the
The half of the impedance of two cablings.
Wherein, first group of short bar and third group short bar and pad or second group of short bar same layer are arranged.
Wherein, one of first group of short bar and third group short bar and the odd number horizontal scanning line of liquid crystal display panel connect
It connects, the even number horizontal scanning line connection of another one and liquid crystal display panel.
The utility model has the advantages that the test structure of the embodiment of the present invention includes three groups of short bars of unique spacer setting, pass through two sides
Two groups of short bars apply GOA signal to liquid crystal display panel, intermediate one group of short bar applies grayscale letter to liquid crystal display panel
Number, it is equivalent to and existing short bar is divided into three sections, therefore not will increase the width of short bar, not will increase routing region, have
Conducive to the narrow frame design of liquid crystal display panel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the test structure of existing liquid crystal display panel；
Fig. 2 is the structural schematic diagram of the test structure of existing GOA liquid crystal display panel；
Fig. 3 is the structural schematic diagram of one embodiment of test structure of liquid crystal display panel of the invention；
Fig. 4 is the structure top view with the liquid crystal display panel of test structure shown in Fig. 3；
Fig. 5 is the flow diagram of one embodiment of test method of liquid crystal display panel of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, to the skill of each exemplary embodiment provided by the present invention
Art scheme is clearly and completely described.In the absence of conflict, the feature in following each embodiments and embodiment can
To be combined with each other.Also, the wording such as directional terminology used by full text of the present invention, such as "left", "right" are for more preferable
The each embodiment of description, be not intended to limit protection scope of the present invention.
Fig. 3 and Fig. 4 are please referred to, is the test structure of the liquid crystal display panel of one embodiment of the invention.The test structure bit
In the routing region of liquid crystal display panel 30, and it is 33, second groups of short bar short including multiple groups testing cushion 31, pad 32 and first group
Road stick 34 and third group short bar 35.
Multiple groups testing cushion 31 is used to receive GOA signal and grayscale letter from IC (Integrated Circuit, integrated circuit)
Number, and GOA signal is transferred to first group of short bar 33 and third group short bar 35, grayscale signal is transferred to second group of short circuit
Stick 34.For shown in Fig. 4, test structure includes 13 groups of testing cushion S1~S13, each group includes multiple testing cushions 31, and this 13 groups
Testing cushion S1~S13It is set gradually along the grid line direction (horizontal direction in figure) for being parallel to liquid crystal display panel 30, first group of survey
Examination pad S1With last group of testing cushion S13It is located at the left and right sides of liquid crystal display panel 30.
Pad 32 includes the sub- pad of multiple groups, with 12 groups shown in Fig. 4 sub- pad X1~X12For, this 12 groups sub- pad X1~
X12It is set gradually along the grid line direction for being parallel to liquid crystal display panel 30, first group of sub- pad X1Sub- pad X is organized with last12
It is located at the left and right sides of liquid crystal display panel 30.Wherein, multiple welding rods of the sub- pad of each group and liquid crystal display panel 30
Data line connection, to provide grayscale signal to data line.In addition, in first group of sub- pad X1Left side be additionally provided with the weldering of one group of son
Disk X01, in the sub- pad X of last group12Right side be additionally provided with one group of sub- pad X02, sub- pad X01Multiple welding rods and liquid crystal
Show the odd-numbered line grid line connection of panel 30, sub- pad X02Multiple welding rods and liquid crystal display panel 30 even number line grid line connect
It connects.
Unlike the prior art, the test structure of the embodiment of the present invention includes three groups of short bars of unique spacer setting
33,34,35.Wherein, first group of short bar 33 and third group short bar 35 can be same with pad 32 or second group of short bar 34
Layer setting, so-called same layer setting is to be formed on same layer structure.First group of short bar 33 and third group short bar 35 are distinguished
By applying GOA signal to liquid crystal display panel 30 with the pad 32 respectively connecting, second group of short bar 34 is by being connected thereto
Pad 32 to liquid crystal display panel 30 apply grayscale signal.Specifically, as shown in connection with fig. 4, first group of short bar 33 passes through the
One cabling 36 and sub- pad X01With testing cushion S1Connection, third group short bar 35 pass through the first cabling 36 and sub- pad X02And test
Pad S13Connection, second group of short bar 34 pass through the second cabling 37 and sub- pad X of each group1~X12With remaining each group testing cushion S2~S12
Between connect.
In conjunction with shown in Fig. 1 and Fig. 3, the present embodiment, which is equivalent to, keeps the width of short bar 13 shown in Fig. 1 constant, and only will
Short bar 13 is divided into three group 33,34,35, and two groups of short bars 33,35 of the left and right sides apply GOA letter to liquid crystal display panel 30
Number, intermediate one group of short bar 34 applies grayscale signal to liquid crystal display panel 30, without increasing the width of short bar 13 as shown in Figure 2
Degree, therefore not will increase routing region, be conducive to the narrow frame design of liquid crystal display panel.
The difference of the embodiment of the present invention and the prior art is also: for receiving the position of the testing cushion 31 of grayscale signal
It sets.In the present embodiment, multiple groups testing cushion 31 is staggered with the sub- pad of multiple groups.As shown in fig.4,13 groups of testing cushion S1~S13
With 12 groups of sub- pad X1~X12It is staggered.
When driving liquid crystal display panel 30, sub- pad X01Pass through one group of testing cushion S connected to it1GOA signal is received,
Sub- pad X02Pass through one group of testing cushion S connected to it13Receive GOA signal, one group of sub- pad of neighbouring first group of short bar 33
X1Pass through one group of testing cushion S connected to it2Receive grayscale signal, one group of sub- pad X of neighbouring third group short bar 3512Pass through
One group of testing cushion S connected to it12Receive grayscale signal, the sub- pad X of remaining each group2~X11By two groups that are located at respective two sides
Testing cushion receives grayscale signal, for example, sub- pad X2By two groups of testing cushion S for being located at its two sides2、S3Receive grayscale signal, son
Pad X11By two groups of testing cushion S for being located at its two sides11、S12Receive grayscale signal.
In addition, the impedance of the first cabling 36 is equal to the half of the impedance of the second cabling 37, so that accessing sub- pad X01、X02
Signal delay degree and access its minor pad X1~X12Signal delay degree it is consistent, thus avoid test when first
The drive area of group short bar 33 and third group short bar 35 is different from the display brightness of the drive area of second group of short bar 33,
It avoids generating windowing phenomena.
The present invention also provides the test methods of the liquid crystal display panel of an embodiment as shown in Figure 5.As shown in figure 5, described
Test method may include step S51 and S52.
S51: the first group of short bar and third group short bar respectively by with the pad that respectively connect to liquid crystal display panel
Apply GOA signal.
S52: the second group of short bar applies grayscale signal to liquid crystal display panel by pad connected to it.
The test method is applied to the test structure of above-mentioned liquid crystal display panel 30, therefore the test method also has phase
Same beneficial effect, details are not described herein again.
It should be understood that the above description is only an embodiment of the present invention, it is not intended to limit the scope of the invention, all benefits
Technical characteristic between the equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, such as each embodiment
Be combined with each other, being applied directly or indirectly in other relevant technical fields, similarly includes in patent protection of the invention
In range.
Claims (6)
1. a kind of test structure of liquid crystal display panel, which is characterized in that the test structure is located at walking for liquid crystal display panel
Line region, and connect including pad, multiple groups testing cushion and with pad and along the grid line direction for being parallel to liquid crystal display panel
First group of short bar, second group of short bar and the third group short bar set gradually, first group of short bar, second group of short circuit
Unique spacer is arranged between stick and third group short bar, first group of short bar and third group short bar respectively by with it is respective
The pad of connection to liquid crystal display panel apply GOA (driving of array substrate row) signal, second group of short bar by with its
The pad of connection applies grayscale signal to liquid crystal display panel, and the pad connecting with second group of short bar includes the weldering of multiple groups
Disk, the multiple groups testing cushion are staggered with the sub- pad of multiple groups, are respectively adjacent to the two of first group of short bar and third group short bar
The sub- pad of group is by receiving grayscale signal with one group of testing cushion respectively connecting, and the sub- pad of remaining each group is by being located at respective two
Two groups of testing cushions of side receive grayscale signal；Wherein, first group of short bar and the third group short bar pass through respectively
One cabling and corresponding sub- pad and testing cushion connect, second group of short bar by the second cabling and corresponding sub- pad and
Testing cushion connection, the impedance of first cabling are equal to the half of the impedance of second cabling.
2. test structure according to claim 1, which is characterized in that first group of short bar and third group short bar with
The pad or second group of short bar same layer setting.
3. test structure according to claim 1, which is characterized in that in first group of short bar and third group short bar
One of connect with the odd number horizontal scanning line of the liquid crystal display panel, another one and the even number line of the liquid crystal display panel are swept
Retouch line connection.
4. a kind of test method of liquid crystal display panel, which is characterized in that applied to the routing region for being located at liquid crystal display panel
Test structure, the test structure includes pad, multiple groups testing cushion and connect with pad and along being parallel to LCD display
First group of short bar, second group of short bar and the third group short bar that the grid line direction of plate is set gradually, it is described first group short
Unique spacer is arranged between road stick, second group of short bar and third group short bar, the pad connecting with second group of short bar
Including the sub- pad of multiple groups, the multiple groups testing cushion is staggered with the sub- pad of multiple groups, and the test method includes:
First group of short bar and third group short bar are respectively by applying GOA to liquid crystal display panel with the pad respectively connecting
(driving of array substrate row) signal；
Be respectively adjacent to two groups of sub- pads of first group of short bar and third group short bar by with one group of test respectively connecting
Pad receives grayscale signal, and the sub- pad of remaining each group receives grayscale signal by being located at two groups of testing cushions of respective two sides；
Wherein, first group of short bar and the third group short bar pass through the first cabling and corresponding sub- pad and survey respectively
Examination pad connection, second group of short bar are connected by the second cabling with corresponding sub- pad and testing cushion, first cabling
Impedance be equal to second cabling impedance half.
5. test method according to claim 4, which is characterized in that first group of short bar and third group short bar with
The pad or second group of short bar same layer setting.
6. test method according to claim 4, which is characterized in that in first group of short bar and third group short bar
One of connect with the odd number horizontal scanning line of the liquid crystal display panel, another one and the even number line of the liquid crystal display panel are swept
Retouch line connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611099360.7A CN106405899B (en) | 2016-11-30 | 2016-11-30 | The test structure and test method of liquid crystal display panel |
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| CN201611099360.7A CN106405899B (en) | 2016-11-30 | 2016-11-30 | The test structure and test method of liquid crystal display panel |
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| CN106405899B true CN106405899B (en) | 2019-09-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873525B (en) * | 2018-07-17 | 2019-09-20 | 深圳市华星光电半导体显示技术有限公司 | A kind of measurement circuit of the grid line of array substrate |
| CN110189671B (en) * | 2019-06-26 | 2022-02-01 | 滁州惠科光电科技有限公司 | Box-formed test circuit, array substrate and liquid crystal display device |
| CN111696460B (en) * | 2020-06-30 | 2022-07-22 | 武汉天马微电子有限公司 | Display panel, test method thereof and display device |
| CN112230485B (en) * | 2020-10-27 | 2022-05-20 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN115167021B (en) * | 2022-08-05 | 2023-07-25 | 苏州华星光电技术有限公司 | Display panel detection method and detection device |
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|---|---|---|---|---|
| CN1828396A (en) * | 2006-04-14 | 2006-09-06 | 友达光电股份有限公司 | LCD subassembly and thin film transistor substrate and testing method |
| CN101236310A (en) * | 2007-01-30 | 2008-08-06 | De&T株式会社 | Method and apparatus for detecting display panel |
| CN102955306A (en) * | 2011-08-30 | 2013-03-06 | 上海天马微电子有限公司 | Liquid crystal display device and testing method thereof |
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2016
- 2016-11-30 CN CN201611099360.7A patent/CN106405899B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828396A (en) * | 2006-04-14 | 2006-09-06 | 友达光电股份有限公司 | LCD subassembly and thin film transistor substrate and testing method |
| CN101236310A (en) * | 2007-01-30 | 2008-08-06 | De&T株式会社 | Method and apparatus for detecting display panel |
| CN102955306A (en) * | 2011-08-30 | 2013-03-06 | 上海天马微电子有限公司 | Liquid crystal display device and testing method thereof |
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Address after: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |