CN100414574C - Display circuit - Google Patents
Display circuit Download PDFInfo
- Publication number
- CN100414574C CN100414574C CNB2006100680053A CN200610068005A CN100414574C CN 100414574 C CN100414574 C CN 100414574C CN B2006100680053 A CNB2006100680053 A CN B2006100680053A CN 200610068005 A CN200610068005 A CN 200610068005A CN 100414574 C CN100414574 C CN 100414574C
- Authority
- CN
- China
- Prior art keywords
- driver
- circuit board
- display
- port
- testing cushion
- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 claims abstract description 78
- 239000011521 glass Substances 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 28
- 239000000523 sample Substances 0.000 description 10
- IYZWUWBAFUBNCH-UHFFFAOYSA-N 2,6-dichlorobiphenyl Chemical compound ClC1=CC=CC(Cl)=C1C1=CC=CC=C1 IYZWUWBAFUBNCH-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- MTLMVEWEYZFYTH-UHFFFAOYSA-N 1,3,5-trichloro-2-phenylbenzene Chemical compound ClC1=CC(Cl)=CC(Cl)=C1C1=CC=CC=C1 MTLMVEWEYZFYTH-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a circuit suitable for display panels, which comprises a circuit board, a flexible circuit board and a driver, wherein the circuit board is provided with at least one test pad. The flexible circuit board is electrically connected and arranged between the circuit board and a display panel. The driver is arranged on the flexible circuit board and is provided with at least one test port. The test port is electrically connected with the test pad.
Description
Technical field
The present invention is relevant in a kind of testing cushion (pad) circuit, and particularly relevant for a kind of display circuit, it is arranged on testing cushion on glass substrate or the system circuit board.
Background technology
Generally speaking, LCD comprises display panel, a plurality of driver, reaches system circuit board.Wherein, display panel is formed by glass substrate.A plurality of drivers comprise scanner driver and data driver again, in order to the display unit of control display panel.Different according to driver and display panel juncture, can be divided into the crystal grain buffing engage (Chip-On-Film, COF) and encapsulation technology such as ambetti joint.Wherein, to engage be a kind of crystal grain to be bonded on flexible circuit board (Flexible Printed CircuitBoard, FPC) technology on to COF.Just driver directly is placed on the film (Film) of FPC, and FPC is being electrically connected between display panel and the system circuit board.It is a kind of crystal grain directly to be connected technology on the face glass that COG engages.Just driver is directly connected display panel.
Driver has a plurality of signal output ports, and common first and last port be as test port.When during as the juncture between driver and display panel, generally can stay the testing cushion of test port in film surface, and this testing cushion being the below that is configured in FPC with COF.Therefore, when desire is carried out the test operation of driver, the FPC turn-over must have been prolonged the test duration.When during as the juncture between driver and display panel, on glass substrate, not staying the testing cushion of test port with COG.And, when desire is carried out the test operation of driver, can only measure the output waveform of driver with probe measurement system (probe station) because driver directly is embedded in glass substrate.This can cause the circuit on the glass substrate to scratch damage, and needs to spend more analysis time.
Summary of the invention
In view of this, in order to address the above problem, fundamental purpose of the present invention is to provide a kind of display circuit, and it comprises circuit board, display panel, flexible circuit board and driver.Circuit board has at least one testing cushion.Flexible circuit board is electrically connected and is arranged between circuit board and the display panel.Drive configuration and has at least one test port on flexible circuit board.Wherein, this at least one test port is electrically connected this at least one testing cushion.
The present invention more proposes a kind of display circuit, and it comprises circuit board, glass substrate, flexible circuit board, reaches driver.Circuit board has at least one testing cushion.Flexible circuit board is electrically connected and is arranged between circuit board and the glass substrate.Drive configuration and has at least one test port on glass substrate.This at least one test port is electrically connected this at least one testing cushion by flexible circuit board.
The present invention proposes a kind of display circuit, and it comprises glass substrate and driver.Glass substrate has at least one testing cushion.Drive configuration and has at least one test port on glass substrate.This at least one test port is electrically connected this at least one testing cushion.
Description of drawings
Fig. 1 represents the display circuit synoptic diagram of first embodiment of the invention.
Fig. 2 represents the detailed configuration figure of display circuit among first embodiment.
Fig. 3 represents the display circuit synoptic diagram of second embodiment of the invention.
Fig. 4 represents the detailed configuration figure of display circuit among second embodiment.
Fig. 5 represents the display circuit synoptic diagram of third embodiment of the invention.
Fig. 6 represents the detailed configuration figure of display circuit among the 3rd embodiment.
The primary clustering symbol description
1～display circuit; 10～PCB; 10a～time schedule controller; 10b～processing unit; 10c～power control unit; 11～display panel; 12,12
1... 12
n～flexible circuit board; 13,13
1... 13
n～driver; L
1... L
x～joint sheet; L
y, L
Y+1, L
Y+2～sample joint sheet; P
1... P
m～output port; TP, TP
1, TP
2～testing cushion;
3～display circuit; 30～PCB; 30a～time schedule controller; 30b～processing unit; 30c～power control unit; 31～display panel; 32,32
1... 32
n～flexible circuit board; 33,33
1... 33
n～driver; 34～glass substrate; P
1... P
m～output port; TP, TP
1, TP
2～testing cushion;
5～display circuit; 50～PCB; 50a～time schedule controller; 50b～processing unit; 50c～power control unit; 51～display panel; 52,52
1... 52
n～flexible circuit board; 53,53
1... 53
n～driver; 54～glass substrate; P
1... P
m～output port; TP, TP
1, TP
2～testing cushion
Embodiment
First embodiment:
Fig. 1 represents the display circuit synoptic diagram of first embodiment of the invention.Consult Fig. 1, display circuit 1 comprise printed circuit board (PCB) (Printed Circuit Board, PCB) 10, display panel 11, and at least one flexible circuit board (Flexible Printed Circuit Board, FPC) 12.In first embodiment, with n flexible circuit board 12
1To 12
nBe example.Flexible circuit board 12
1To 12
nBe electrically connected and be arranged between PCB 10 and the display panel 11.PCB 10 has a plurality of testing cushion TP, and comprises time schedule controller 10a, processing unit 10b, and unit such as power control unit 10c.Display panel 11 is formed by glass substrate, and has a plurality of display units.
Fig. 2 represents the detailed configuration figure of display circuit 1.In Fig. 2, will be with driver 13
1For example illustrates, and driver 13
1Has the first port P as test port
1And last port P
mConsult Fig. 2, driver 13
1Be configured in and put at flexible circuit board 12
1On, and flexible circuit board 12
1Be electrically connected and be arranged between PCB 10 and the display panel 11.Flexible circuit board 12
1A side that engages with PCB 10 has a plurality of joint sheet L
1To L
XAt a plurality of joint sheet L
1To L
xIn, at least one sample (dummy) joint sheet is arranged.Because driver 13 among first embodiment
1Have two test ports, so Fig. 2 have two or more sample joint sheets.Consult Fig. 2, driver 13
1The first port P
1And last port P
mBe electrically connected to sample joint sheet L respectively
yAnd L
Y+1, and sample joint sheet L
yAnd L
Y+1Be electrically connected to the testing cushion TP on the PCB 10
1And TP
2
According to the display circuit of first embodiment, when driver 13 engages in the COF mode with display panel 11, then can be by the testing cushion P of PCB 10
1And P
2Measure the output signal of driver 13,, and do not need the flexible circuit board turn-over is measured output signal with the test operation of execution driver.
In first embodiment, driver 13 can be data driver or scanner driver.In addition, the test port quantity of each driver is decided according to practical application, and testing cushion is decided according to the quantity of test port.The quantity of sample joint sheet then gets final product enough to give the test port use, and the words sentence is talked about, and a part of sample joint sheet is to give test port to use, and another part sample joint sheet then is to do other use.
Second embodiment:
Fig. 3 represents the display circuit synoptic diagram of second embodiment of the invention.Consult Fig. 3, display circuit 3 comprise printed circuit board (PCB) (Printed Circuit Board, PCB) 30, display panel 31, and at least one flexible circuit board (Flexible Printed Circuit Board, FPC) 32.In a second embodiment, with n flexible circuit board 32
1To 32
nBe example.Flexible circuit board 32
1To 32
nBe electrically connected and be arranged between PCB 30 and the display panel 31.PCB 30 has a plurality of testing cushion TP, and comprises time schedule controller 30a, processing unit 30b, and unit such as power control unit 30c.Display panel 31 is formed by glass substrate 34, and has a plurality of display units.
Fig. 4 represents the detailed configuration figure of display circuit 3.In Fig. 4, will be with driver 33
1For example illustrates, and driver 33
1Has the first port P as test port
1And last port P
mConsult Fig. 4, driver 33
1Be configured in and put on glass substrate 34, and by flexible circuit board 32
1Be electrically connected to PCB 30.Consult Fig. 4, driver 33
1The first port P
1And last port P
mBe electrically connected to testing cushion TP respectively
1And TP
2
According to the display circuit of second embodiment, when driver 33 and display panel 31 are done when engaging in the COF mode, can be by the testing cushion P of glass substrate 34
1And P
2Measure the output signal of driver 33,, and do not need the flexible circuit board turn-over is measured output signal with the test operation of execution driver.
In a second embodiment, driver 33 can be data driver or scanner driver.In addition, the test port quantity of each driver is decided according to practical application, and testing cushion is decided according to the quantity of test port.
The 3rd embodiment:
Fig. 5 represents the present invention's display circuit synoptic diagram by embodiment.Consult Fig. 5, display circuit 5 comprise printed circuit board (PCB) (Printed Circuit Board, PCB) 50, display panel 51, and at least one flexible circuit board (Flexible Printed Circuit Board, FPC) 52.In the 3rd embodiment, with n flexible circuit board 52
1To 52
nBe example.Flexible circuit board 52
1To 52
nBe electrically connected and be arranged between circuit board 50 and the display panel 51.Circuit board 50 comprises time schedule controller, processing unit, and unit such as power control unit.Display panel 51 has glass substrate 54, and has a plurality of display units.Glass substrate 54 has a plurality of testing cushion TP.
Display circuit 5 also comprises at least one driver 53, is used for controlling the display unit of display panel 51.。In the 3rd embodiment, with n driver 53
1To 53
nBe example.Driver 53
1To 53
nBe configured in a side of glass substrate 54, and respectively by flexible circuit board 52
1To 52
nFor being electrically connected to circuit board 50.Each driver has a plurality of signal output port P
1To P
m, and have at least one port usually as test port.In the 3rd embodiment, with the first port P
1And last port P
mAs test port.The first port P of each driver
1And last port P
mBe electrically connected to corresponding testing cushion TP respectively.
Fig. 6 represents the detailed configuration figure of display circuit 5.In Fig. 6, will be with driver 53
1For example illustrates, and driver 53
1Has the first port P as test port
1And last port P
mConsult Fig. 6, driver 53
1On the configuration glass substrate on 54, and by flexible circuit board 52
1Be electrically connected to circuit board 50.Consult Fig. 6, driver 53
1The first port P
1And last port P
mBe electrically connected to the testing cushion TP on the glass substrate 54 respectively
1And TP
2
According to the display circuit of the 3rd embodiment, when driver 53 and display panel 51 are done when engaging in the COG mode, then can be by the testing cushion P of glass substrate 54
1And P
2The output signal of measuring driver 53 has avoided the circuit on the glass substrate to scratch damage to carry out the test operation of driver.
In the 3rd embodiment, driver 53 can be data driver or scanner driver.In addition, the test port quantity of each driver is decided according to practical application, and testing cushion is decided according to the quantity of test port.
Claims (11)
1. a display circuit is applicable to a display panel, comprising:
One circuit board has at least one testing cushion;
One flexible circuit board is electrically connected and is arranged between this circuit board and this display panel; And
One driver is disposed on this flexible circuit board, and has at least one test port, and wherein, this at least one test port is electrically connected this at least one testing cushion.
2. display circuit as claimed in claim 1, wherein, this flexible circuit board has at least one sample joint sheet, and this at least one test port is electrically connected to this at least one testing cushion by this at least one sample joint sheet.
3. display circuit as claimed in claim 1, wherein, this driver is a data driver.
4. display circuit as claimed in claim 1, wherein, this driver is the one scan driver.
5. display circuit as claimed in claim 1, wherein, this testing cushion is in order to measure the output signal of this driver.
6. display circuit as claimed in claim 1, wherein, this circuit board comprises time schedule controller, processing unit, reaches power control unit.
7. display circuit comprises:
One circuit board has at least one testing cushion;
One glass substrate;
One flexible circuit board is electrically connected and is arranged between this circuit board and this glass substrate; And
One driver is disposed on this glass substrate, and has at least one test port, and wherein, this at least one test port is electrically connected this at least one testing cushion by this flexible circuit board.
8. display circuit as claimed in claim 7, wherein, this driver is a data driver.
9. display circuit as claimed in claim 7, wherein, this driver is the one scan driver.
10. display circuit as claimed in claim 7, wherein, this testing cushion is in order to measure the output signal of this driver.
11. display circuit as claimed in claim 7, wherein, this circuit board comprises time schedule controller, processing unit, reaches power control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100680053A CN100414574C (en) | 2006-03-23 | 2006-03-23 | Display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100680053A CN100414574C (en) | 2006-03-23 | 2006-03-23 | Display circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1822075A CN1822075A (en) | 2006-08-23 |
| CN100414574C true CN100414574C (en) | 2008-08-27 |
Family
ID=36923416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100680053A Expired - Fee Related CN100414574C (en) | 2006-03-23 | 2006-03-23 | Display circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100414574C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401025B (en) * | 2006-03-07 | 2011-01-26 | 夏普株式会社 | Liquid crystal display device having a plurality of pixel electrodes |
| CN101452127B (en) * | 2007-11-30 | 2010-09-29 | 群康科技(深圳)有限公司 | LCD device, test system thereof and test method |
| CN103529248B (en) * | 2013-10-24 | 2016-09-14 | 无锡博一光电科技有限公司 | Pressing structure and use the measurement jig of this pressing structure |
| CN104732902B (en) | 2015-04-21 | 2017-08-08 | 京东方科技集团股份有限公司 | Display base plate, display panel and display device |
| CN106814296A (en) * | 2015-12-01 | 2017-06-09 | 北京自动测试技术研究所 | Liquid crystal display display driver chip method of testing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004095872A (en) * | 2002-08-30 | 2004-03-25 | Seiko Epson Corp | Electronic part mounted substrate, electro-optic device, method for manufacturing electronic part mounted substrate and electro-optic device and electronic unit |
| CN1503040A (en) * | 2002-11-19 | 2004-06-09 | 三星电子株式会社 | Liquid crystal display and testing method thereof |
| CN1580793A (en) * | 2003-12-12 | 2005-02-16 | 友达光电股份有限公司 | Method for measuring contact impedance of joint point of liquid crystal display panel and the liquid crystal display panel |
-
2006
- 2006-03-23 CN CNB2006100680053A patent/CN100414574C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004095872A (en) * | 2002-08-30 | 2004-03-25 | Seiko Epson Corp | Electronic part mounted substrate, electro-optic device, method for manufacturing electronic part mounted substrate and electro-optic device and electronic unit |
| CN1503040A (en) * | 2002-11-19 | 2004-06-09 | 三星电子株式会社 | Liquid crystal display and testing method thereof |
| CN1580793A (en) * | 2003-12-12 | 2005-02-16 | 友达光电股份有限公司 | Method for measuring contact impedance of joint point of liquid crystal display panel and the liquid crystal display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1822075A (en) | 2006-08-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |