CN1963908A - Temperature compensating apparatus of LCD element and its method - Google Patents
Temperature compensating apparatus of LCD element and its method Download PDFInfo
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- CN1963908A CN1963908A CN 200510095531 CN200510095531A CN1963908A CN 1963908 A CN1963908 A CN 1963908A CN 200510095531 CN200510095531 CN 200510095531 CN 200510095531 A CN200510095531 A CN 200510095531A CN 1963908 A CN1963908 A CN 1963908A
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Abstract
This invention relates to one LCD part temperature compensation device and its method applied in LCD display panel drive circuit to adjust display panel connection voltage and sets one temperature test parts through display panel drive circuit , wherein, the drive power circuit output end is connected to one voltage adjust module output end with other end of adjust module connected to one memory unit; setting one database in memory unit with temperature property connection voltage values.
Description
[technical field]
Relevant a kind of temperature compensation means of the present invention and method thereof are meant a kind of temperature compensation means and method thereof that is applied to LCD element especially.
[background technology]
As shown in Figure 1, existing LCD includes driving power circuit, controller, line driver, row driver and display panel, and the display effect of this display panels can Yin Wendu and is connect the difference of the size of voltage altogether, the voltage that connects altogether that part display panel tool optimal display result is required can increase with the increase of temperature, and the required voltage that connects altogether of part display panel tool optimal display result can reduce with the increase of temperature, and part display panel tool optimal display result is required connects voltage altogether and can be nonlinearities change with the increase of temperature, need the different characteristics that connects voltage altogether if ignore this kind of display panel with the difference of temperature, then can cause this display panel outside certain temperature range, can produce phenomenons such as flicker, thereby can not keep normal image quality show state.
In view of this, be necessary to develop a kind of temperature compensation means and method thereof of LCD element in fact, this temperature compensation means needs the different characteristics that connects voltage altogether according to the difference with temperature of display panels, can be according to the output voltage of the driving power circuit of this display panels of adjustment, altogether the connect voltage of suitable of this display panels under specified temp promptly is provided, thereby makes this display panels under different temperatures, can keep normal image quality show state.
[summary of the invention]
Therefore, the object of the present invention is to provide a kind of temperature compensation means of LCD element, this temperature compensation means needs the different characteristics that connects voltage altogether according to the difference with temperature of display panels, can be according to the output voltage of the driving power circuit of this display panels of adjustment, altogether the connect voltage of suitable of this display panels under specified temp promptly is provided, thereby makes this display panels under different temperatures, can keep normal image quality show state.
For reaching above-mentioned purpose, the temperature compensation means of LCD element of the present invention is applied on the liquid crystal display displays panel drive circuit, connect voltage altogether in order to what regulate display panel, it is mainly by being provided with a detector unit on this display panel, drive circuit, and an end of this detector unit is connected with a voltage regulator module output terminal, and another input end of this voltage regulator module is connected with a storage element, by a database is set in this storage element in advance, be provided with in this database temperature therewith under the temperature required optimal of this display panels to connect magnitude of voltage altogether corresponding, when different temperatures, this voltage regulator module is adjusted its output voltage according to the temperature that this detector unit detected, thereby this display panels required optimal voltage that connects altogether under specified temp is provided, makes this display panels have preferable display effect.
Another purpose of the present invention is to provide the temperature compensation of a LCD element, be applied on the liquid crystal display displays panel drive circuit, in order to the display panel regulated connect voltage (Vcom) altogether, make this display panels have preferable display effect.
For reaching above-mentioned purpose, it mainly comprises the steps:
With storage element that voltage regulator module is connected in a database is set, make temperature therewith under the temperature required optimal of this display panels to connect magnitude of voltage altogether corresponding;
The temperature value that detector unit detected that the voltage regulator module acquisition is connected with this display panels;
The optimal magnitude of voltage that connects altogether that this voltage regulator module is required according to pairing this display panels of this temperature or temperature range in the database, regulate the output voltage of this voltage regulator module, so that this display panels optimal voltage that connects altogether under specified temp to be provided.
Compared to prior art, the present invention is provided with earlier a database in storage element, with make temperature and this display panels required to connect voltage altogether corresponding, by the detector unit detected temperatures, and treated unit altogether the connect voltage of the suitableeest required according to liquid crystal panel corresponding in this temperature reading database with this temperature, thereby make this voltage regulator module that its output voltage is adjusted, and offer this display panels optimal voltage that connects altogether under specified temp, and make this display panels can keep normal image quality show state.
For purpose of the present invention, structural attitude and function thereof are had further understanding, conjunction with figs. is described in detail as follows now:
[description of drawings]
Fig. 1 illustrates the composition frame chart of available liquid crystal display.
Fig. 2 illustrates the composition frame chart of the temperature compensation means of LCD element of the present invention.
Fig. 3 illustrates the process flow diagram of the temperature compensation of LCD element of the present invention.
[embodiment]
See also shown in Figure 2, composition frame chart for the temperature compensation means of LCD element of the present invention, the temperature compensation means 1 of LCD element of the present invention comprises a power Vcc at least, pull-up resistor R1, detector unit 2, voltage regulator module 3 and impact damper 4, wherein the end of this pull-up resistor R1 is connected with power Vcc, and the other end is connected with an end of detector unit 2, and the other end ground connection of this detector unit 2, and an input end of this voltage regulator module 3 is connected to the node between this pull-up resistor R1 and this detector unit 2, and the output terminal of this voltage regulator module 3 is connected with the input end of impact damper 4, and the output terminal of this impact damper 4 provide this display panels required connect voltage altogether.In addition, this voltage regulator module 3 also is connected with a storage element 5, be electrically erasable programmable ROM (EEPROM) in the present embodiment, be provided with a database in this storage element, be provided with in this database temperature and corresponding this display panels of this temperature required connect magnitude of voltage altogether, and this detector unit 2 is a thermistor, when temperature variation, its resistance is understood corresponding increase or is reduced, influence the voltage of its two end thus or by its current value, and this voltage regulator module 3 comprises an analog-digital converter 30 at least, processing unit 31 and voltage-adjusting unit 32, wherein this analog-digital converter 30 is in order to the simulating signal (curtage) that receives 2 outputs of this detector unit and be converted to digital signal to transfer to processing unit 31, these processing unit 31 these analog-digital converters 30 of control, the running of processing unit 31 and voltage-adjusting unit 32, and be connected with storage element 5, after processing unit 31 receives to the digital signal of these analog-digital converter 30 outputs, the treated temperature value that is converted to, then processing unit 31 read according to this display panels of this temperature in this temperature reading database or temperature range correspondence the suitableeest connect magnitude of voltage altogether, and send control command to voltage-adjusting unit 33, thereby adjust the voltage of its output, and export this display panels to, for delaying of preventing to export, also be provided with an impact damper 4 between the voltage input end the output terminal and the connecing altogether of this display panels of this voltage regulator module 3.
Described thus, the present invention is by being provided with a detector unit 2 on this display panel, drive circuit as can be known, and on its voltage regulator module 3, connect a storage element 5, make this voltage regulator module 3 adjust its output voltage according to this temperature, this display panels is optimal under specified temp to connect voltage altogether thereby offer, and makes this display panels can keep normal image quality show state.
See also Fig. 3, be the process flow diagram of the temperature compensation of LCD element of the present invention, the temperature compensation of LCD element of the present invention comprises the steps:
With storage element that voltage regulator module 3 is connected in a database is set, make temperature therewith under the temperature required optimal of this display panels to connect magnitude of voltage altogether corresponding;
The temperature value that voltage regulator module 3 acquisition detector units 2 are detected;
The optimal magnitude of voltage that connects altogether that this voltage regulator module 3 is required according to pairing this display panels of this temperature or temperature range in the database, regulate the output voltage of this voltage regulator module 3, so that this display panels optimal voltage that connects altogether under specified temp to be provided.
In the method, register in the processing unit 31 of this voltage regulator module 3 is 2 first time of storing temperature detecting element or the last temperature that is detected in advance, when processing unit 31 interval certain hours are given an order, make the signal of analog-digital converter 30 these detector units 2 of acquisition, and treated unit 31 is converted to temperature value, processing unit 31 compares the temperature value of storing in this temperature value and its register earlier, as identical, then the output voltage of this voltage regulator module 3 of dimension row then makes voltage-adjusting unit 32 adjust the output voltage of this voltage regulator module 3 as difference.
Compared to prior art, the present invention is provided with earlier a database in storage element 5, corresponding to make required the suitableeest of temperature and this display panels connect voltage altogether, by detector unit 2 detected temperatures, thereby make this voltage regulator module 3 according to this display panels in the database this temperature required connect magnitude of voltage altogether, its output voltage is adjusted, this display panels is optimal under specified temp to connect voltage altogether thereby offer, and makes this display panels can keep normal image quality show state.
Claims (8)
1, a kind of temperature compensation means of LCD element is applied on the liquid crystal display displays panel drive circuit, connects voltage altogether in order to what regulate display panel, it is characterized in that comprising:
One detector unit is arranged on this display panel, drive circuit;
One voltage regulator module, one input end is connected with the output terminal of this detector unit, to receive the signal that this temperature detecting module is exported;
One storage element is connected with another input end of this voltage regulator module, and is provided with a database in this storage element, be provided with in this database temperature therewith under the temperature required optimal of this display panels to connect magnitude of voltage altogether corresponding;
By said elements, when different temperatures, this voltage regulator module connects voltage altogether according to required optimal of this temperature in the database, and adjusts its output voltage, and makes this display panels have preferable display effect.
2, the temperature compensation means of LCD element as claimed in claim 1, it is characterized in that: this detector unit is connected with power supply by a pull-up resistor, and the other end ground connection of this detector unit, the input end of this voltage regulator module is connected on the node between this pull-up resistor and this detector unit.
3, the temperature compensation means of LCD element as claimed in claim 1 or 2 is characterized in that: this detector unit is a thermistor.
4, the temperature compensation means of LCD element as claimed in claim 3 is characterized in that: connecing altogether of the output terminal of this voltage regulator module and display panels is serially connected with a buffering between the voltage input end
5, the temperature compensation means of LCD element as claimed in claim 4, it is characterized in that: this voltage regulator module comprises an analog-digital converter at least, processing unit and voltage-adjusting unit, wherein this analog-digital converter is in order to the simulating signal that receives the output of this detector unit and be converted to digital signal to transfer to processing unit, this processing unit is controlled this analog-digital converter, the running of processing unit and voltage-adjusting unit, and be connected with storage element, after processing unit receives to the digital signal of this analog-digital converter output, the treated temperature value that is converted to.
6, a kind of temperature compensation of LCD element, be applied on the liquid crystal display displays panel drive circuit, connect voltage altogether in order to the display panel regulated, at least be provided with detector unit, voltage regulator module and storage element on this liquid crystal display displays panel drive circuit, the output terminal of this detector unit is connected with voltage regulator module, and this voltage regulator module is connected with this storage element, it is characterized in that this temperature compensation may further comprise the steps:
With storage element that voltage regulator module is connected in a database is set, make temperature therewith under the temperature required optimal of this display panels to connect magnitude of voltage altogether corresponding;
The temperature value that detector unit detected that the voltage regulator module acquisition is connected with this display panels;
The optimal magnitude of voltage that connects altogether that voltage regulator module is required according to pairing this display panels of this temperature or temperature range in the database, regulate the output voltage of this voltage regulator module, so that this display panels optimal voltage that connects altogether under specified temp to be provided.
7, the temperature compensation of LCD element as claimed in claim 6, it is characterized in that: this voltage regulator module comprises an analog-digital converter at least, processing unit and voltage-adjusting unit, this analog-digital converter is in order to the simulating signal that receives the output of this detector unit and be converted to digital signal to transfer to processing unit, this processing unit is controlled this analog-digital converter, the running of processing unit and voltage-adjusting unit, and be connected with storage element, after processing unit receives to the digital signal of this analog-digital converter output, the treated temperature value that is converted to.
8, the temperature compensation of LCD element as claimed in claim 7, it is characterized in that: the register in the processing unit of voltage regulator module is the storing temperature detecting element first time or the last temperature that is detected in advance, certain hour is given an order when the processing unit interval, make analog-digital converter capture the signal of this detector unit, and treated cell translation is a temperature value, processing unit compares the temperature value of storing in this temperature value and its register earlier, as identical, then keep the output voltage of this voltage regulator module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510095531 CN1963908A (en) | 2005-11-10 | 2005-11-10 | Temperature compensating apparatus of LCD element and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510095531 CN1963908A (en) | 2005-11-10 | 2005-11-10 | Temperature compensating apparatus of LCD element and its method |
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| CN1963908A true CN1963908A (en) | 2007-05-16 |
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| CN 200510095531 Pending CN1963908A (en) | 2005-11-10 | 2005-11-10 | Temperature compensating apparatus of LCD element and its method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814277A (en) * | 2009-02-23 | 2010-08-25 | 统宝光电股份有限公司 | Active matrix display and electronic apparatus equipped with same |
| CN101567170B (en) * | 2008-04-25 | 2012-07-04 | 群康科技(深圳)有限公司 | Liquid crystal display and drive method thereof |
| CN102759661A (en) * | 2011-04-28 | 2012-10-31 | 鸿富锦精密工业（深圳）有限公司 | Testing circuit and testing method for temperature compensating resistor |
| CN103543808A (en) * | 2012-07-16 | 2014-01-29 | 鸿富锦精密工业（深圳）有限公司 | CPU supply circuit protecting system |
| CN106679842A (en) * | 2016-11-28 | 2017-05-17 | 北京航天自动控制研究所 | Temperature measuring method and circuit adopting reference voltage compensation technology |
| CN111081195A (en) * | 2019-11-28 | 2020-04-28 | Tcl华星光电技术有限公司 | Voltage regulating circuit, display panel and high-temperature reliability testing method thereof |
-
2005
- 2005-11-10 CN CN 200510095531 patent/CN1963908A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567170B (en) * | 2008-04-25 | 2012-07-04 | 群康科技(深圳)有限公司 | Liquid crystal display and drive method thereof |
| CN101814277A (en) * | 2009-02-23 | 2010-08-25 | 统宝光电股份有限公司 | Active matrix display and electronic apparatus equipped with same |
| CN102759661A (en) * | 2011-04-28 | 2012-10-31 | 鸿富锦精密工业（深圳）有限公司 | Testing circuit and testing method for temperature compensating resistor |
| CN103543808A (en) * | 2012-07-16 | 2014-01-29 | 鸿富锦精密工业（深圳）有限公司 | CPU supply circuit protecting system |
| CN103543808B (en) * | 2012-07-16 | 2016-04-20 | 华栋 | CPU feed circuit protection system |
| CN106679842A (en) * | 2016-11-28 | 2017-05-17 | 北京航天自动控制研究所 | Temperature measuring method and circuit adopting reference voltage compensation technology |
| CN106679842B (en) * | 2016-11-28 | 2019-02-26 | 北京航天自动控制研究所 | A kind of temp measuring method and temperature measurement circuit using reference voltage compensation technology |
| CN111081195A (en) * | 2019-11-28 | 2020-04-28 | Tcl华星光电技术有限公司 | Voltage regulating circuit, display panel and high-temperature reliability testing method thereof |
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