CN101923233A - Liquid crystal display and panel heater used in same - Google Patents
Liquid crystal display and panel heater used in same Download PDFInfo
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- CN101923233A CN101923233A CN2009101464820A CN200910146482A CN101923233A CN 101923233 A CN101923233 A CN 101923233A CN 2009101464820 A CN2009101464820 A CN 2009101464820A CN 200910146482 A CN200910146482 A CN 200910146482A CN 101923233 A CN101923233 A CN 101923233A
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Abstract
The invention relates to a liquid crystal display (LCD) which comprises a first substrate, a second substrate, a liquid crystal layer and a panel heater. The second substrate is opposite to the first substrate, and the liquid crystal layer is arranged between the first substrate and second substrate. The panel heater is arranged on the first substrate or the second substrate to heat to ensure that the LCD can work normally under low temperature.
Description
Technical field
The present invention relates to a kind of LCD and a kind of panel heater that is used for LCD, relate in particular to a kind of LCD that makes and be used for panel heater and corresponding liquid crystal display under the low temperature environment.
Background technology
Progress along with science and technology, LCD is because of it has high image quality, volume is little, in light weight and advantage such as applied range, and be widely used in the various consumption electronic products such as mobile phone, notebook computer, desktop display device and TV, and replaced traditional cathode-ray tube display gradually and become the main flow of display.
Along with the popularization of LCD, it has been applied under the various low-temperature working environment of aircraft, automobile or the like gradually.LCD is to utilize liquid crystal material as its photoswitch, and the response speed of liquid crystal material under low temperature environment can be degenerated, and can't get a promotion, and causes the liquid crystal display displays picture undesired, forms ghost.In addition, LCD other display operation characteristic under low temperature environment also can be degenerated, and is unfavorable for that LCD carries out work.
Summary of the invention
The object of the present invention is to provide a kind of LCD that can be applicable under the low temperature environment.
The present invention also aims to provide a kind of panel heater of liquid crystal display applications under low temperature environment that make.
The object of the invention to solve the technical problems is to adopt following technical scheme to realize.
The present invention proposes a kind of LCD, and it comprises one first substrate, one second substrate, a liquid crystal layer and a panel heater.Second substrate is with respect to first substrate, and liquid crystal layer is arranged between first substrate and second substrate.Thereby panel heater is arranged on first substrate or second substrate and makes LCD carry out operate as normal under low temperature environment so that LCD is heated.
The present invention also proposes a kind of panel heater that is used for LCD, and it is used for LCD is heated so that LCD is carried out operate as normal under low temperature environment.Panel heater comprises: a transparency carrier, a plurality of transparent conductive body and circuit board.A plurality of transparent conductive bodies are arranged on the transparency carrier in order to convert electric energy to heat energy.Circuit board electrically connects a plurality of transparent conductive bodies to provide electric energy to a plurality of transparent conductive bodies.Wherein, each transparent conductive body is an inverted U structure, and circuit board is arranged on a side of transparency carrier.
Preferably, a plurality of transparent conductive bodies adopt the electrically conducting transparent material and make, for example tin indium oxide or indium zinc oxide or the like.
Preferably, each transparent conductive body comprises two vertical bar shape structures that are parallel to each other and connects the connecting portion of these two vertical bar shape structures.
Preferably, circuit board is a flexible circuit board.
In sum, when disclosed LCD is carried out work under low temperature environment, can utilize panel heater that it is heated, thereby can improve the response speed of liquid liquid crystal layer, and improve LCD other display operation characteristic under low temperature environment, so that LCD can be worked normally.
In addition, because the transparent conductive body of panel heater of the present invention is arranged to the inverted U structure, so panel heater can be only be provided with a flexible circuit board to provide voltage to each transparent conductive body in a side of its transparency carrier.Therefore, the whole volume of panel heater of the present invention is less.In addition, only the side at the transparency carrier of panel heater is provided with flexible circuit board, and then flexible circuit board is less to the influence of the viewing area area of LCD, and it can not dwindle the area in liquid crystal display displays zone basically.And the electrically conducting transparent bulk resistor of inverted U structure is less, and the electric current of the transparent conductive body of therefore flowing through is bigger, and its electric power is bigger, and the efficiency of heating surface is higher.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the synoptic diagram of a kind of LCD of disclosing of one embodiment of the invention.
Fig. 2 is the synoptic diagram of panel heater shown in Figure 1.
The thetagram of selection area when Fig. 3-the 6th, panel heater shown in Figure 1 switch under-20 degrees centigrade of environment.
100: 110: the first substrates of LCD
Substrate 130 in 120: the second: liquid crystal layer
140: panel heater 141: transparency carrier
142: transparent conductive body 143: flexible circuit board
145: positive link 146: negative link
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, LCD that foundation the present invention is proposed and its embodiment of panel heater, structure, feature and the effect thereof that is used for LCD, describe in detail as after.
Fig. 1 has illustrated a kind of LCD 100 that one embodiment of the invention disclosed, and it comprises first substrate 110, second substrate 120, liquid crystal layer 130 and panel heater 140.First substrate 110 can be thin film transistor (TFT) (TFT) substrate of LCD 100, and second substrate 120 can be colored filter (CF) substrate of LCD 100.Liquid crystal layer 130 is arranged between first substrate 110 and second substrate 120 with the photoswitch as LCD 100, and it is made up of liquid crystal molecule.This technology is well-known to those skilled in the art, does not repeat them here.
See also Fig. 2, it has illustrated the synoptic diagram of panel heater shown in Figure 1 140.As shown in the figure, panel heater 140 comprises transparency carrier 141, transparent conductive body 142 and circuit board 143.Transparent conductive body 142 is distributed on the transparency carrier 141, thereby its generation heat energy when energising heats liquid crystal layer 130.Circuit board 143 electrically connects transparent conductive body 142 to provide electric energy to transparent conductive body 142.
Transparency carrier 141 adopts transparent material and makes, for example glass, plastics or resin etc.Transparent conductive body 142 adopts the electrically conducting transparent material and makes, for example tin indium oxide (ITO) or indium zinc oxide (IZO) etc.Transparent conductive body 142 is the inverted U structure, and it can be evenly or anisotropically is distributed on the transparency carrier 141, and is electrically connected to the voltage that circuit board 143 is provided with circuit board for receiving 143 respectively.The transparent conductive body 142 of each inverted U structure comprises two vertical bar shape structures that are parallel to each other (not indicating) respectively and connects the connecting portion (not indicating) of two vertical bar shape structures.
Circuit board 143 is a flexible circuit board, and it is arranged on a side of transparency carrier 141.Circuit board 143 comprises positive link 145 and the negative link 146 that is arranged alternately on circuit board 143.The positive link 145 of circuit board 143 and negative link 146 are electrically connected to the two ends of the inverted U structure of transparent conductive body 142 respectively, thereby provide voltage to each transparent conductive body 142.Thereby transparent conductive body 142 is accepted to convert electric energy to heat energy behind the voltage liquid crystal layer 130 is heated.
See also Fig. 3-6, it has illustrated the thetagram of disclosed panel heater 140 selection area when-20 degrees centigrade of environment (low temperature environment) are switched on down respectively.See also Fig. 2, selected several zones on panel heater 140, for example channel 1, channel 2, channel 3, channel 4, channel 5 and CH 1, CH 2, CH 3, CH 4, CH 5 are to measure panel heater 140 each regional temperature when the energising.Wherein, selected regional channel 1, channel 2, channel 3, channel 4 and the channel 5 of the present invention be distributed in the inverted U structure of transparent conductive body 142 in the two parallel mutually interstructural grooves of vertical bar shape or the gap of 142 of two transparent conductive bodies in; And CH 1, CH 2, CH 3, CH 4 and CH 5 are distributed on the transparent conductive body 142.
When the two ends, the left and right sides of transparent conductive body 142 feeding 31.8V voltage, when electric current was 870mA, the temperature-raising characteristic of selected regional channel 1, channel 2, channel 3, channel 4 and channel 5 as shown in Figure 3.When the two ends, the left and right sides of transparent conductive body 142 input 18V voltage, when electric current was 50mA, the temperature-raising characteristic of selected regional channel 1, channel 2, channel 3, channel 4 and channel 5 as shown in Figure 4.Shown in Fig. 3 and 4, when panel heater 140 energising, its temperature can very fast lifting, thereby the liquid crystal layer 130 of LCD 100 is heated and improves the response speed of liquid crystal layer 130 and improve other operating characteristicses of LCD 100.
When the two ends, the left and right sides of transparent conductive body 142 feeding 12V voltage, when electric current was 330mA, the temperature-raising characteristic of selection area CH 1, CH 2, CH 3, CH 4 and CH 5 as shown in Figure 5.When the two ends, the left and right sides of transparent conductive body 142 feeding 24V voltage, when electric current was 660mA, the temperature-raising characteristic of selection area CH 1, CH 2, CH 3, CH 4 and CH 5 as shown in Figure 6.From Fig. 5 and 6 as can be seen, when applying voltage at two ends, transparent conductive body 142 left and right sides, the selection area CH 2 and the CH 3 of the connecting portion edge of the inverted U structure of close transparent conductive body 142 compare with other selection area CH 1, CH 4 and CH 5, because current density is inhomogeneous, and exist the uneven problem of being heated.Prove by experiment, by reducing the width D of transparent conductive body 142, and reduce the width L of connecting portion, be about to height that the opening of transparent conductive body 142 grooves opens once, the current density that flows through transparent conductive body 142 is tending towards evenly, thereby improves its uneven problem of being heated.
It needs to be noted at this, according to formula
As can be known, wherein, ρ represents resistivity, l represents length, and s represents cross-sectional area, because transparent conductive body 142 of the present invention is designed to the inverted U structure, therefore, transparent conductive body 142 subregions, for example the cross-sectional area of the connecting portion in the inverted U structure is bigger, and then the resistance of transparent conductive body 142 is less.When applying voltage on transparent conductive body 142, the electric current of the transparent conductive body 142 of flowing through is bigger, so the electric power of transparent conductive body 142 is bigger, and its efficiency of heating surface is higher.
In sum, when disclosed LCD 100 is carried out work under low temperature environment, can utilize panel heater 140 that it is heated, thereby can improve the response speed of the liquid crystal layer 130 of LCD 100, and improve LCD 100 other display operation characteristic under low temperature environment, so that LCD 100 can be worked normally.
In addition, because the transparent conductive body 142 of panel heater 140 of the present invention is arranged to the inverted U structure, therefore panel heater 140 can be only be provided with a flexible circuit board 143 providing voltage to each transparent conductive body 142 in a side of its transparency carrier 141, and flexible circuit board need all be set so that the transparent conductive body of voltage to list structure to be provided in the relative both sides of transparency carrier 142.Therefore, panel heater 140 whole volumes of the present invention are less.In addition, only the side at the transparency carrier 141 of panel heater 140 is provided with flexible circuit board 143, and then the influence of the viewing area area of 143 pairs of LCD 100 of flexible circuit board is less, and it can not dwindle the area of LCD 100 viewing areas basically.And transparent conductive body 142 its resistance of inverted U structure are less, and the electric current of the transparent conductive body 142 of therefore flowing through is bigger, and its electric power is bigger, and the efficiency of heating surface is higher.
Certainly, those skilled in the art can run away with according to aforementioned content, transparent conductive body 142 can be arranged on the one side of the close liquid crystal layer 130 of transparency carrier 141, thus quickly with thermal energy transfer to liquid crystal layer 130 with heating fluid crystal layer 130.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. LCD is characterized in that it comprises:
One first substrate;
One second substrate, it is with respect to this first substrate; And
One liquid crystal layer, it is arranged between this first substrate and this second substrate;
It is characterized in that this LCD also comprises a panel heater, thereby it is arranged on this first substrate or second substrate and makes this LCD carry out operate as normal under low temperature environment so that this LCD is heated.
2. LCD according to claim 1 is characterized in that this panel heater comprises:
One transparency carrier;
A plurality of transparent conductive bodies are arranged on this transparency carrier in order to convert electric energy to heat energy, and wherein each transparent conductive body is an inverted U structure; And
One circuit board is arranged on a side of this transparency carrier and is electrically connected to these a plurality of transparent conductive bodies to provide electric energy to these a plurality of transparent conductive bodies.
3. LCD according to claim 2 is characterized in that these a plurality of transparent conductive bodies adopt electrically conducting transparent materials and make.
4. LCD according to claim 3 is characterized in that these a plurality of transparent conductive bodies adopt tin indium oxides or indium zinc oxide and make.
5. LCD according to claim 2 is characterized in that each transparent conductive body comprises two vertical bar shape structures that are parallel to each other and connects the connecting portion of these two vertical bar shape structures.
6. LCD according to claim 2 is characterized in that this circuit board is a flexible circuit board.
7. panel heater that is used for LCD, it is used for this LCD is heated so that this LCD is carried out operate as normal under low temperature environment, and this panel heater comprises:
One transparency carrier;
A plurality of transparent conductive bodies are arranged on this transparency carrier in order to convert electric energy to heat energy; And
One circuit board is electrically connected to these a plurality of transparent conductive bodies to provide electric energy to these a plurality of transparent conductive bodies;
It is characterized in that each transparent conductive body is an inverted U structure, and this circuit board is arranged on a side of this transparency carrier.
8. the panel heater that is used for LCD according to claim 7 is characterized in that these a plurality of transparent conductive bodies adopt electrically conducting transparent materials and make.
9. the panel heater that is used for LCD according to claim 8 is characterized in that these a plurality of transparent conductive bodies adopt tin indium oxides or indium zinc oxide and make.
10. the panel heater that is used for LCD according to claim 7 is characterized in that each transparent conductive body comprises two vertical bar shape structures that are parallel to each other and connects the connecting portion of these two vertical bar shape structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101464820A CN101923233A (en) | 2009-06-09 | 2009-06-09 | Liquid crystal display and panel heater used in same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101464820A CN101923233A (en) | 2009-06-09 | 2009-06-09 | Liquid crystal display and panel heater used in same |
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| CN101923233A true CN101923233A (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101464820A Pending CN101923233A (en) | 2009-06-09 | 2009-06-09 | Liquid crystal display and panel heater used in same |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929025A (en) * | 2012-11-14 | 2013-02-13 | 中航华东光电有限公司 | Device and method for solving problem of no signal in original liquid crystal display screen at low temperature |
| CN103018943A (en) * | 2012-11-29 | 2013-04-03 | 中国电子科技集团公司第五十五研究所 | Liquid crystal display with auxiliary heating electrodes and electrode manufacturing method |
| CN103207467A (en) * | 2012-09-26 | 2013-07-17 | 中国电子科技集团公司第五十五研究所 | Method and device for improving temperature uniformity of low temperature heating of heating layer of liquid crystal display |
| CN103777394A (en) * | 2013-12-17 | 2014-05-07 | 中国电子科技集团公司第五十五研究所 | Manufacturing method for reinforcement type liquid crystal display module |
| CN109031813A (en) * | 2018-08-31 | 2018-12-18 | 上海天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN112394559A (en) * | 2019-08-12 | 2021-02-23 | 群创光电股份有限公司 | Electronic device |
| CN112612154A (en) * | 2019-10-03 | 2021-04-06 | 群创光电股份有限公司 | Liquid crystal device having a plurality of liquid crystal cells |
| CN112859416A (en) * | 2021-03-12 | 2021-05-28 | 厦门天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
| TWI774042B (en) * | 2020-08-17 | 2022-08-11 | 大陸商宸美（廈門）光電有限公司 | Liquid crystal display device |
-
2009
- 2009-06-09 CN CN2009101464820A patent/CN101923233A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207467A (en) * | 2012-09-26 | 2013-07-17 | 中国电子科技集团公司第五十五研究所 | Method and device for improving temperature uniformity of low temperature heating of heating layer of liquid crystal display |
| CN103207467B (en) * | 2012-09-26 | 2015-09-02 | 中国电子科技集团公司第五十五研究所 | Improve method and the device of liquid crystal display zone of heating low-temperature heat temperature homogeneity |
| CN102929025A (en) * | 2012-11-14 | 2013-02-13 | 中航华东光电有限公司 | Device and method for solving problem of no signal in original liquid crystal display screen at low temperature |
| CN103018943A (en) * | 2012-11-29 | 2013-04-03 | 中国电子科技集团公司第五十五研究所 | Liquid crystal display with auxiliary heating electrodes and electrode manufacturing method |
| CN103018943B (en) * | 2012-11-29 | 2015-07-29 | 中国电子科技集团公司第五十五研究所 | A kind of liquid crystal display and method for making its electrode with auxiliary heating electrode |
| CN103777394A (en) * | 2013-12-17 | 2014-05-07 | 中国电子科技集团公司第五十五研究所 | Manufacturing method for reinforcement type liquid crystal display module |
| CN109031813A (en) * | 2018-08-31 | 2018-12-18 | 上海天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN112394559A (en) * | 2019-08-12 | 2021-02-23 | 群创光电股份有限公司 | Electronic device |
| CN112612154A (en) * | 2019-10-03 | 2021-04-06 | 群创光电股份有限公司 | Liquid crystal device having a plurality of liquid crystal cells |
| TWI774042B (en) * | 2020-08-17 | 2022-08-11 | 大陸商宸美（廈門）光電有限公司 | Liquid crystal display device |
| CN112859416A (en) * | 2021-03-12 | 2021-05-28 | 厦门天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
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Application publication date: 20101222 |