CN102419952A - Feedback security structure of organic light emitting diode display device - Google Patents
Feedback security structure of organic light emitting diode display device Download PDFInfo
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- CN102419952A CN102419952A CN2010102941726A CN201010294172A CN102419952A CN 102419952 A CN102419952 A CN 102419952A CN 2010102941726 A CN2010102941726 A CN 2010102941726A CN 201010294172 A CN201010294172 A CN 201010294172A CN 102419952 A CN102419952 A CN 102419952A
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- emitting diode
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Abstract
The invention discloses a feedback security structure of an organic light emitting diode display device, which comprises an organic light emitting diode panel, a drive chip and a signal transmission circuit group. The organic light emitting diode panel comprises a signal input terminal set and a feedback signal terminal set which is connected with the ground. The drive chip comprises a power supply input port which is connected with an external power supply, a signal output port and a feedback port which is connected with the ground. The signal transmission circuit group is electrically connected to and arranged the signal input terminal set and the signal output port. Due to the adoption of the feedback security structure, the instability of the data signal outputted by the drive chip and the damage of the drive chip can be avoided.
Description
Technical field
The present invention relates to organic light emitting diode display, particularly relate to a kind of feedback safeguard construction of organic light emitting diode display.
Background technology
Organic Light Emitting Diode (OLED) display can be divided into passive type (PassiveMatrix according to type of drive; PMOLED) with active (Active Matrix; AMOLED); Active driving is with the electric capacity storage assembly, so picture element still can keep original brightness after sweep trace is inswept; Passive type drive have only by scanning line selection to picture element just can be lighted, and no matter be that active driving or passive type drive, the image display light source of said oled panel all is to drive through a chip for driving.
As shown in Figure 1, be existing oled panel 11 and chip for driving 12 circuit structure graphs of a relation.Said oled panel 11 has a signal input terminal group 111 and a feedback signal terminal group 112.Said chip for driving 12 has the feedback port 123 of power input mouth 121, a signal output port 122 and a ground connection of an external power supply 13.Electrically connect through a signal transmission line group 14 between the signal input terminal group 111 of wherein said signal output port 122 and said oled panel 11, electrically connect through a feedback line group 15 between the feedback signal terminal group 112 of said feedback interface 123 and said oled panel 11.In view of the above; Said oled panel 11 receives said chip for driving 12 to arrange in pairs or groups signal difference that scanning (Common) signal of said feedback port 123 produced and send brightness via data (Segment) signal of signal output port 122 output; Yet said OLED display uses situation still to have the following defective that must improve immediately in reality:
Because the feedback port 123 of said chip for driving 12 is the feedback signal terminal groups 112 that are electrically connected to said oled panel 11 through said feedback line group 15; Therefore; When sending brightness when said oled panel 11 generation signal difference, each pin of the feedback signal terminal group 112 of said oled panel 11 all can be exported an electric current to said chip for driving 12 inside.When said chip for driving 12 flows into excessive current value; Except meeting makes chip for driving 12 over-heat insides; Cause data (Segment) jitter exported outside; Severe patient also will make said chip for driving 12 burn because of temperature is too high, particularly when the pin of the feedback port 123 of said chip for driving 12 is too much (pin of the feedback signal terminal group 111 of said oled panel 11 is too much), above-mentioned defective take place more easily.
Summary of the invention
Technical matters to be solved by this invention provides a kind of feedback safeguard construction of organic light emitting diode display, can not only avoid chip for driving to damage, and the data-signal that can also avoid chip for driving to export is unstable.
For solving the problems of the technologies described above, the feedback safeguard construction of organic light emitting diode display provided by the invention comprises: an organic LED panel, it comprises the feedback signal terminal group that a signal input terminal group and connects the earth.One chip for driving, it comprises the power input mouth of an external power supply, the feedback interface that a signal output port and connects the earth.One signal transmission line group, it is electrically connected between said signal input terminal group and the said signal output port.
Preferably, said feedback signal terminal group electrically connects an end of a feedback circuit group, and the other end of said feedback circuit group connects the earth.
Preferably, said signal transmission line group has a plurality of signal circuits, and each said signal circuit is electrically connected between said each pin of signal input terminal group and each pin of said signal output port.
Can not only avoid chip for driving to damage, the data-signal instability that can also avoid chip for driving to export can make the outputting data signals of chip for driving stable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation:
Fig. 1 is existing oled panel and chip for driving circuit structure graph of a relation;
Fig. 2 is that embodiment of the invention circuit structure concerns synoptic diagram.
Embodiment
As shown in Figure 2, be the feedback safeguard construction of embodiment of the invention organic light emitting diode display.Said organic light emitting diode display can be a kind of passive organic light-emitting diode display or current-mode positive type organic light emitting diode display.Said organic light emitting diode display mainly is made up of an Organic Light Emitting Diode (OLED) panel 20, a chip for driving 30 and 40 of signal transmission line groups.
Said oled panel 20 includes the feedback signal terminal group 22 that a signal input terminal group 21 and connects the earth 51.Said signal input terminal group 21 has a plurality of pins, and said feedback signal terminal group 22 has a plurality of the pins that connect the earth 51.In the present embodiment, the mode that said feedback signal terminal group 22 connects the earth 51 is to reach through following manner, and promptly said feedback signal terminal group 22 electrically connects an end of a feedback circuit group 52, and the other end of said feedback circuit group 52 connects the earth 51.In addition, said feedback circuit group 52 is made up of 521 of the feedback circuits of the said feedback signal terminal of correspondence group 22 each pin count.
Said chip for driving 30 includes the power input mouth 31 of an external power supply 53, the feedback interface 33 that a signal output port 32 and connects the earth 51.Said signal output port 32 has the pin of corresponding said signal input terminal group 21 pin counts.
Said signal transmission line group 40 electrically connects between said signal input terminal group 21 and the said signal output port 32.Illustrate further, said signal transmission line group 40 has a plurality of signal circuits 41, and each said signal circuit 41 is to be electrically connected between said signal input terminal group 21 each pin and said signal output port 32 each pin.
The above is the structure and the configuration explanation thereof of each main member of the embodiment of the invention.
In view of the above, owing to the present invention directly connects the feedback signal terminal group 22 of said oled panel 20 on the earth 51 or is connected directly to the earth 51 through said feedback circuit group 52.Therefore; When receiving said chip for driving 30, said oled panel 20 arranges in pairs or groups the feedback signal terminal 22 of said oled panel 20 when connecting the earth 51 via data (Segment) signal of signal output port 32 output; The signal difference that both produced and when sending brightness; The electric current that each pin of the feedback signal terminal group 22 of said oled panel 20 is exported can be flowed directly to the earth 51; And can not flow to said chip for driving 30 inside, therefore can not cause the damage of said chip for driving 30 or cause data (Segment) jitter of being exported.
In sum, this embodiment and diagram are merely preferred embodiment of the present invention, when can not with the scope implemented of qualification the present invention, the equalization of promptly doing according to claim of the present invention generally changes and modifies, and all should belong in the scope that patent of the present invention contains.
Claims (3)
1. the feedback safeguard construction of an organic light emitting diode display is characterized in that, comprising:
One organic LED panel, it comprises the feedback signal terminal group that a signal input terminal group and connects the earth;
One chip for driving, it comprises the power input mouth of an external power supply, the feedback interface that a signal output port and connects the earth;
One signal transmission line group, it is electrically connected between said signal input terminal group and the said signal output port.
2. the feedback safeguard construction of organic light emitting diode display according to claim 1, it is characterized in that: said feedback signal terminal group electrically connects an end of a feedback circuit group, and the other end of said feedback circuit group connects the earth.
3. the feedback safeguard construction of organic light emitting diode display according to claim 1; It is characterized in that: said signal transmission line group has a plurality of signal circuits, and each said signal circuit is electrically connected between said each pin of signal input terminal group and each pin of said signal output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102941726A CN102419952A (en) | 2010-09-28 | 2010-09-28 | Feedback security structure of organic light emitting diode display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102941726A CN102419952A (en) | 2010-09-28 | 2010-09-28 | Feedback security structure of organic light emitting diode display device |
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| Publication Number | Publication Date |
|---|---|
| CN102419952A true CN102419952A (en) | 2012-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102941726A Pending CN102419952A (en) | 2010-09-28 | 2010-09-28 | Feedback security structure of organic light emitting diode display device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101027708A (en) * | 2004-07-01 | 2007-08-29 | 立迪思科技股份有限公司 | Removing crosstalk in an organic light-emitting diode display |
| US20080211793A1 (en) * | 2007-01-12 | 2008-09-04 | Chiung-Ching Ku | Driving apparatus for an OLED panel |
| CN101271664A (en) * | 2007-03-20 | 2008-09-24 | 索尼株式会社 | Display device |
| CN201130516Y (en) * | 2007-11-20 | 2008-10-08 | 康佳集团股份有限公司 | LED display modular control circuit |
| CN201868074U (en) * | 2010-09-28 | 2011-06-15 | 华凌光电股份有限公司 | Feedback safety structure of organic light emitting diode display |
-
2010
- 2010-09-28 CN CN2010102941726A patent/CN102419952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101027708A (en) * | 2004-07-01 | 2007-08-29 | 立迪思科技股份有限公司 | Removing crosstalk in an organic light-emitting diode display |
| US20080211793A1 (en) * | 2007-01-12 | 2008-09-04 | Chiung-Ching Ku | Driving apparatus for an OLED panel |
| CN101271664A (en) * | 2007-03-20 | 2008-09-24 | 索尼株式会社 | Display device |
| CN201130516Y (en) * | 2007-11-20 | 2008-10-08 | 康佳集团股份有限公司 | LED display modular control circuit |
| CN201868074U (en) * | 2010-09-28 | 2011-06-15 | 华凌光电股份有限公司 | Feedback safety structure of organic light emitting diode display |
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Application publication date: 20120418 |