JPS54103366A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS54103366A JPS54103366A JP1002078A JP1002078A JPS54103366A JP S54103366 A JPS54103366 A JP S54103366A JP 1002078 A JP1002078 A JP 1002078A JP 1002078 A JP1002078 A JP 1002078A JP S54103366 A JPS54103366 A JP S54103366A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- voltage
- display device
- heating element
- 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.)
- Pending
Links
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
PURPOSE: To enable operating temperature of a liquid crystal display element to be readily controlled with good responsiveness by providing a heating element which also serves as a temperature sensor on a substrate or near the same.
CONSTITUTION: A heating element 7 such as SnO2 is provided on the surface of one glass substrate 1 of the liquid crystal display device and forms a bridge circuit 8 together with reference resistances RA thru RC and a balance poing adjusting variable resistor (r). A DC power source 10 is connected to a voltage controlling transistor TR between the points X, Y of their connection. The TR is controlled by the output of an error amplifier 9 via driving circuit 11 and its collector-emitter voltage is made variable. Hence, the voltage E-e having been variably set of the voltage E of the power source 10 is applied to the circuit 8. This causes the heating element 7 to energize and evolve heat thereby heating the liquid display element and indicating the resistance value corresponding to the operating temperature of the liquid crystal display device.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1002078A JPS54103366A (en) | 1978-02-01 | 1978-02-01 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1002078A JPS54103366A (en) | 1978-02-01 | 1978-02-01 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54103366A true JPS54103366A (en) | 1979-08-14 |
Family
ID=11738708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1002078A Pending JPS54103366A (en) | 1978-02-01 | 1978-02-01 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54103366A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500878A (en) * | 1981-12-15 | 1985-02-19 | Thomson-Csf | Thermoelectrically controlled electrochromatic visualization device |
| WO1998029779A1 (en) * | 1996-12-30 | 1998-07-09 | Honeywell Inc. | Transparent temperature sensor for an active matrix liquid crystal display |
| WO2000002083A3 (en) * | 1998-07-06 | 2000-02-24 | Ericsson Telefon Ab L M | Lcd temperature sensing |
-
1978
- 1978-02-01 JP JP1002078A patent/JPS54103366A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500878A (en) * | 1981-12-15 | 1985-02-19 | Thomson-Csf | Thermoelectrically controlled electrochromatic visualization device |
| WO1998029779A1 (en) * | 1996-12-30 | 1998-07-09 | Honeywell Inc. | Transparent temperature sensor for an active matrix liquid crystal display |
| US6089751A (en) * | 1996-12-30 | 2000-07-18 | Honeywell Inc. | Transparent temperature sensor for an active matrix liquid crystal display |
| WO2000002083A3 (en) * | 1998-07-06 | 2000-02-24 | Ericsson Telefon Ab L M | Lcd temperature sensing |
| US6309100B1 (en) | 1998-07-06 | 2001-10-30 | Telefonaktiebolaget Lm Ericsson (Publ) | LCD temperature sensing |
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