KR970071061A - Temperature compensation circuit of a TFT liquid crystal panel - Google Patents
Temperature compensation circuit of a TFT liquid crystal panel Download PDFInfo
- Publication number
- KR970071061A KR970071061A KR1019960010680A KR19960010680A KR970071061A KR 970071061 A KR970071061 A KR 970071061A KR 1019960010680 A KR1019960010680 A KR 1019960010680A KR 19960010680 A KR19960010680 A KR 19960010680A KR 970071061 A KR970071061 A KR 970071061A
- Authority
- KR
- South Korea
- Prior art keywords
- liquid crystal
- temperature
- crystal panel
- temperature compensation
- capacitor
- Prior art date
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Abstract
본 발명은 TFT 액정패널의 온도보상회로에 관한 것이다.The present invention relates to a temperature compensation circuit of a TFT liquid crystal panel.
종래의 TFT 액정표시 패널은 온도보상을 위하여 온도변화에 따라 전기저항치가 달라지는 온도검출소자인 서미스터(Thermistor)를 사용하여 온도보상을 기하였으나, 이는 별도의 서미스터를 구비해야 하므로 많은 공간을 필요로 할 뿐만 아니라 온도보상이 불한정한 문제점이 있었다.In a conventional TFT liquid crystal display panel, temperature compensation is performed using a thermistor, which is a temperature detecting element whose electric resistance value changes according to a temperature change for temperature compensation. However, since a separate thermistor must be provided, In addition, there was a definite problem that temperature compensation was not performed.
따라서 본 발명은 상기한 종래 기술의 문제점을 개선코자하여 별도의 서미스터없이 온도변화를 검출하기 위한 실제 액정 패널상에 마련된 액정 캐패시터와 별도의 온도 의존성이 작은 기준 캐패시터와 상기 캐패시터 사이의 전위차를 연산증폭기의 반전단에 접속하고 설정이득에 따라 반전증폭 출력하여 온도를 검출하고 게인 콘롤러에서 교류조정하여 보정신호를 Vcom 구동회로 또는 소스 구동회로에 출력하므로써, 액정패널의 주위환경 변화나 광원용 조명으로 사용되는 백라이트(Backlight)등의 영향에 의한 액정의 열화를 검출하여 온도에 따른 투과도의 변화를 보상해 줌으로서 콘트라스트(Contrast)나 화질을 개선하도록 한 것이다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and a liquid crystal display device, And outputting a correction signal to the Vcom drive circuit or the source drive circuit by adjusting the alternating current at the gain cone roller to detect the change in the ambient environment of the liquid crystal panel or the illumination of the light source The deterioration of the liquid crystal due to the influence of backlight or the like is detected and the change of the transmittance according to the temperature is compensated to improve the contrast and the image quality.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제4도는 본 발명에 의한 TFT의 액정패널의 온도보상회로 구성도FIG. 4 is a configuration diagram of a temperature compensation circuit of a liquid crystal panel of a TFT according to the present invention
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960010680A KR970071061A (en) | 1996-04-10 | 1996-04-10 | Temperature compensation circuit of a TFT liquid crystal panel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960010680A KR970071061A (en) | 1996-04-10 | 1996-04-10 | Temperature compensation circuit of a TFT liquid crystal panel |
Publications (1)
Publication Number | Publication Date |
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KR970071061A true KR970071061A (en) | 1997-11-07 |
Family
ID=66222746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960010680A KR970071061A (en) | 1996-04-10 | 1996-04-10 | Temperature compensation circuit of a TFT liquid crystal panel |
Country Status (1)
Country | Link |
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KR (1) | KR970071061A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990053687A (en) * | 1997-12-24 | 1999-07-15 | 윤종용 | Temperature Compensation Circuit of TF LCD |
KR100667060B1 (en) * | 2003-11-03 | 2007-01-10 | 삼성에스디아이 주식회사 | LCD Pannel and method to have suitable display characteristic at circumference environment |
KR100820843B1 (en) * | 2002-05-13 | 2008-04-11 | 삼성전자주식회사 | Liquid crystal display, method for detecting an inner temperature thereof and method for compensating a quality of image thereof |
US7839478B2 (en) | 2005-07-15 | 2010-11-23 | Samung Electronics Co., Ltd. | Temperature sensor for display device, thin film transistor array panel including the temperature sensor, liquid crystal display, driving circuit for liquid crystal display and flicker controlling system for liquid crystal display |
-
1996
- 1996-04-10 KR KR1019960010680A patent/KR970071061A/en not_active Application Discontinuation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990053687A (en) * | 1997-12-24 | 1999-07-15 | 윤종용 | Temperature Compensation Circuit of TF LCD |
KR100820843B1 (en) * | 2002-05-13 | 2008-04-11 | 삼성전자주식회사 | Liquid crystal display, method for detecting an inner temperature thereof and method for compensating a quality of image thereof |
KR100667060B1 (en) * | 2003-11-03 | 2007-01-10 | 삼성에스디아이 주식회사 | LCD Pannel and method to have suitable display characteristic at circumference environment |
US7839478B2 (en) | 2005-07-15 | 2010-11-23 | Samung Electronics Co., Ltd. | Temperature sensor for display device, thin film transistor array panel including the temperature sensor, liquid crystal display, driving circuit for liquid crystal display and flicker controlling system for liquid crystal display |
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Legal Events
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |