JPS646927A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS646927A JPS646927A JP62163213A JP16321387A JPS646927A JP S646927 A JPS646927 A JP S646927A JP 62163213 A JP62163213 A JP 62163213A JP 16321387 A JP16321387 A JP 16321387A JP S646927 A JPS646927 A JP S646927A
- Authority
- JP
- Japan
- Prior art keywords
- illumination
- sensor
- output
- temp
- source
- 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.)
- Granted
Links
Landscapes
- Liquid Crystal (AREA)
Abstract
PURPOSE:To prevent the alteration in display characteristic caused by the change of use conditions such as ambient temperature and illumination, etc., by respectively forming a temp. sensor and an illumination sensor of amorphous silicon on a substrate where a thin film transistor is formed. CONSTITUTION:The voltage of a power source 42 is controlled according to an output from the temp. sensor 45, namely, the voltage of the power source of the driving transistor of a source driving circuit 41 is controlled. When the ambient temperature rises, an effective voltage impressed on the electrode of an image element lowers, and not only the contrast but also the brightness lower. But, by controlling the power source 42 according to the output from the temp. sensor 45, the amplitude of a source driving signal from the source driving circuit 41 is made large and the ON level of the liquid crystal is kept nearly constant. And the illumination sensor 54 outputs an output according to illumination of external light. Namely, according to the output from the illumination sensor 54, a dimmer 44 is controlled by a control part 61 and the illumination of the radiated light from a light source for backlight 43 is raised when the illumination of the external light 53 rises. Thus the favorable contrast can be always obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163213A JPH07113723B2 (en) | 1987-06-29 | 1987-06-29 | Liquid crystal display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163213A JPH07113723B2 (en) | 1987-06-29 | 1987-06-29 | Liquid crystal display |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS646927A true JPS646927A (en) | 1989-01-11 |
JPH07113723B2 JPH07113723B2 (en) | 1995-12-06 |
Family
ID=15769449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62163213A Expired - Lifetime JPH07113723B2 (en) | 1987-06-29 | 1987-06-29 | Liquid crystal display |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07113723B2 (en) |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991003759A1 (en) * | 1989-09-11 | 1991-03-21 | Grid Systems Corporation | Lcd contrast adjustment system |
JPH03274020A (en) * | 1990-03-23 | 1991-12-05 | Nippon Seiki Co Ltd | Liquid crystal display device |
JPH0434519A (en) * | 1990-05-31 | 1992-02-05 | Nippon Seiki Co Ltd | Liquid crystal display device |
JPH04107233U (en) * | 1991-02-28 | 1992-09-16 | 日本電気ホームエレクトロニクス株式会社 | liquid crystal display device |
US5157525A (en) * | 1989-10-27 | 1992-10-20 | Eev Limited | Control of liquid crystal display visual properties to compensate for variation in the characteristics of the liquid crystal |
US5164849A (en) * | 1990-10-05 | 1992-11-17 | Allied-Signal Inc. | Liquid crystal display with a fast warm up |
WO1995009378A1 (en) * | 1993-09-30 | 1995-04-06 | Citizen Watch Co., Ltd. | Liquid crystal projector |
US5637187A (en) * | 1990-09-05 | 1997-06-10 | Seiko Instruments Inc. | Light valve device making |
WO1997037270A1 (en) * | 1996-03-29 | 1997-10-09 | Citizen Watch Co., Ltd. | Liquid crystal display |
US6172117B1 (en) | 1998-02-27 | 2001-01-09 | Akzo Nobel N.V. | Biocidal preservatives |
JP2002131719A (en) * | 2000-10-25 | 2002-05-09 | Sony Corp | Liquid crystal display |
US6414740B1 (en) | 1999-06-01 | 2002-07-02 | Nec Corporation | LCD having temperature detection elements provided on an active-substrate |
JP2005122187A (en) * | 2003-10-15 | 2005-05-12 | Samsung Electronics Co Ltd | Electronic display device having optical sensor |
WO2005057275A1 (en) * | 2003-12-08 | 2005-06-23 | Sony Corporation | Liquid crystal display and backlight adjusting method |
JP2005352490A (en) * | 2004-06-10 | 2005-12-22 | Samsung Electronics Co Ltd | Display device and driving method thereof |
US7009663B2 (en) * | 2003-12-17 | 2006-03-07 | Planar Systems, Inc. | Integrated optical light sensitive active matrix liquid crystal display |
JP2006201784A (en) * | 2005-01-19 | 2006-08-03 | Samsung Electronics Co Ltd | Sensor and thin film transistor array panel including the same |
JP2006201224A (en) * | 2005-01-18 | 2006-08-03 | Seiko Epson Corp | Liquid crystal apparatus and electronic device |
JP2006251806A (en) * | 2005-03-08 | 2006-09-21 | Samsung Electronics Co Ltd | Display panel and liquid crystal display device having same |
JP2008170509A (en) * | 2007-01-09 | 2008-07-24 | Hitachi Displays Ltd | Image display device provided with dimmer function |
JP2011123503A (en) * | 2005-12-01 | 2011-06-23 | Hitachi Displays Ltd | Display device |
US8031307B2 (en) | 1997-09-02 | 2011-10-04 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display apparatus containing image sensor and process for producing the same |
US8072444B2 (en) | 2004-07-13 | 2011-12-06 | Nec Corporation | Display device and electronic apparatus using the same |
US9971456B2 (en) | 2002-02-20 | 2018-05-15 | Apple Inc. | Light sensitive display with switchable detection modes for detecting a fingerprint |
US11073926B2 (en) | 2002-02-20 | 2021-07-27 | Apple Inc. | Light sensitive display |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5845522U (en) * | 1981-09-19 | 1983-03-26 | 三菱電機株式会社 | liquid crystal display device |
-
1987
- 1987-06-29 JP JP62163213A patent/JPH07113723B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5845522U (en) * | 1981-09-19 | 1983-03-26 | 三菱電機株式会社 | liquid crystal display device |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5029982A (en) * | 1989-09-11 | 1991-07-09 | Tandy Corporation | LCD contrast adjustment system |
WO1991003759A1 (en) * | 1989-09-11 | 1991-03-21 | Grid Systems Corporation | Lcd contrast adjustment system |
US5157525A (en) * | 1989-10-27 | 1992-10-20 | Eev Limited | Control of liquid crystal display visual properties to compensate for variation in the characteristics of the liquid crystal |
JPH03274020A (en) * | 1990-03-23 | 1991-12-05 | Nippon Seiki Co Ltd | Liquid crystal display device |
JPH0434519A (en) * | 1990-05-31 | 1992-02-05 | Nippon Seiki Co Ltd | Liquid crystal display device |
US5637187A (en) * | 1990-09-05 | 1997-06-10 | Seiko Instruments Inc. | Light valve device making |
US6067062A (en) * | 1990-09-05 | 2000-05-23 | Seiko Instruments Inc. | Light valve device |
US5164849A (en) * | 1990-10-05 | 1992-11-17 | Allied-Signal Inc. | Liquid crystal display with a fast warm up |
JPH04107233U (en) * | 1991-02-28 | 1992-09-16 | 日本電気ホームエレクトロニクス株式会社 | liquid crystal display device |
US5842761A (en) * | 1993-09-30 | 1998-12-01 | Citizen Watch Co., Ltd. | Liquid crystal projector |
WO1995009378A1 (en) * | 1993-09-30 | 1995-04-06 | Citizen Watch Co., Ltd. | Liquid crystal projector |
WO1997037270A1 (en) * | 1996-03-29 | 1997-10-09 | Citizen Watch Co., Ltd. | Liquid crystal display |
US6115091A (en) * | 1996-03-29 | 2000-09-05 | Citizen Watch Co., Ltd. | Liquid crystal device with adjustable light throughput |
US8031307B2 (en) | 1997-09-02 | 2011-10-04 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display apparatus containing image sensor and process for producing the same |
US6172117B1 (en) | 1998-02-27 | 2001-01-09 | Akzo Nobel N.V. | Biocidal preservatives |
US6414740B1 (en) | 1999-06-01 | 2002-07-02 | Nec Corporation | LCD having temperature detection elements provided on an active-substrate |
JP2002131719A (en) * | 2000-10-25 | 2002-05-09 | Sony Corp | Liquid crystal display |
US11073926B2 (en) | 2002-02-20 | 2021-07-27 | Apple Inc. | Light sensitive display |
US9971456B2 (en) | 2002-02-20 | 2018-05-15 | Apple Inc. | Light sensitive display with switchable detection modes for detecting a fingerprint |
JP2005122187A (en) * | 2003-10-15 | 2005-05-12 | Samsung Electronics Co Ltd | Electronic display device having optical sensor |
JPWO2005057275A1 (en) * | 2003-12-08 | 2007-12-13 | ソニー株式会社 | Liquid crystal display device and backlight adjustment method |
JP4706480B2 (en) * | 2003-12-08 | 2011-06-22 | ソニー株式会社 | Liquid crystal display device |
US8305338B2 (en) | 2003-12-08 | 2012-11-06 | Sony Corporation | Liquid crystal display apparatus and backlight adjustment method |
WO2005057275A1 (en) * | 2003-12-08 | 2005-06-23 | Sony Corporation | Liquid crystal display and backlight adjusting method |
US7009663B2 (en) * | 2003-12-17 | 2006-03-07 | Planar Systems, Inc. | Integrated optical light sensitive active matrix liquid crystal display |
JP2005352490A (en) * | 2004-06-10 | 2005-12-22 | Samsung Electronics Co Ltd | Display device and driving method thereof |
US8072444B2 (en) | 2004-07-13 | 2011-12-06 | Nec Corporation | Display device and electronic apparatus using the same |
JP2006201224A (en) * | 2005-01-18 | 2006-08-03 | Seiko Epson Corp | Liquid crystal apparatus and electronic device |
JP2006201784A (en) * | 2005-01-19 | 2006-08-03 | Samsung Electronics Co Ltd | Sensor and thin film transistor array panel including the same |
JP2006251806A (en) * | 2005-03-08 | 2006-09-21 | Samsung Electronics Co Ltd | Display panel and liquid crystal display device having same |
JP2011123503A (en) * | 2005-12-01 | 2011-06-23 | Hitachi Displays Ltd | Display device |
JP2008170509A (en) * | 2007-01-09 | 2008-07-24 | Hitachi Displays Ltd | Image display device provided with dimmer function |
Also Published As
Publication number | Publication date |
---|---|
JPH07113723B2 (en) | 1995-12-06 |
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