CN202453607U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN202453607U CN202453607U CN2012200964728U CN201220096472U CN202453607U CN 202453607 U CN202453607 U CN 202453607U CN 2012200964728 U CN2012200964728 U CN 2012200964728U CN 201220096472 U CN201220096472 U CN 201220096472U CN 202453607 U CN202453607 U CN 202453607U
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Abstract
The utility model discloses a display panel and a display device. The display panel comprises a first baseplate, a second baseplate, a thin film transistor, a pixel electrode, a common electrode, and a liquid-crystal layer between the first baseplate and the second baseplate, wherein the liquid-crystal layer comprises a first liquid crystal layer and a second liquid crystal layer, the first liquid-crystal layer is a polymer dispersed liquid crystal, and the second liquid-crystal layer comprises a plurality of colorful liquid crystal units; and each colorful liquid-crystal unit comprises a first colour liquid crystal subunit, a second colour liquid crystal subunit and a third colour liquid crystal subunit, the first colour liquid crystal subunit comprises a first-pitch cholesteric liquid crystal, the second colour liquid crystal subunit comprises a second-pitch cholesteric liquid crystal, and the third colour liquid crystal subunit comprises a third-pitch cholesteric liquid crystal. The utility model further discloses a display device with the display panel. The display panel provided by the utility model improves the light utilization rate.
Description
Technical field
The utility model relates to the display technique field, particularly a kind of display panel and display device.
Background technology
At present, traditional display panels is mainly realized colored the demonstration through color rete, but the preparation of color rete need adopt composition technology to prepare, complex process, and cost is higher.Simultaneously,, and absorb the light of its commplementary wave length, therefore influenced the utilization factor of light source because the principle that color rete filters is the light transmission that makes with the corresponding wavelength of color film color.For the reflection LCD that does not have backlight, when under the more weak condition of natural light, working, at present, the utilization factor of light source is merely about 5%, and the utilization factor that therefore improves light source just seems even more important.
The utility model content
The technical matters that (one) will solve
The technical matters that the utility model will solve is: how to improve in the display panel utilization factor to light.
(2) technical scheme
For solving the problems of the technologies described above; The utility model provides a kind of display panel; Comprise: first substrate, second substrate, thin film transistor (TFT), pixel electrode, public electrode and be arranged at first substrate and second substrate between liquid crystal layer; Said complex liquid crystal layer comprises first liquid crystal layer and second liquid crystal layer, and said first liquid crystal layer is a polymer dispersed liquid crystal layer; Said second liquid crystal layer comprises a plurality of color liquid crystals unit; Said each color liquid crystal unit comprises the first color liquid crystal subelement; The second color liquid crystal subelement and the 3rd color liquid crystal subelement, the said first color liquid crystal subelement comprises the cholesteric liquid crystal of first pitch; The said second color liquid crystal subelement comprises the cholesteric liquid crystal of second pitch; Said the 3rd color liquid crystal subelement comprises the cholesteric liquid crystal of the 3rd pitch.
Preferably, the said first color liquid crystal subelement is the red liquid crystal subelement, and the said second color liquid crystal subelement is the green liquid crystal subelement, and said the 3rd color liquid crystal subelement is the blue liquid crystal subelement; Said first pitch is 620～740nm, and said second pitch is 505～570nm, and said the 3rd pitch is 445～505nm.
Preferably, said red liquid crystal subelement comprises that pitch is the cholesteric liquid crystal of 700nm.
Preferably, said green liquid crystal subelement comprises that pitch is the cholesteric liquid crystal of 540nm.
Preferably, said blue liquid crystal subelement comprises that pitch is the cholesteric liquid crystal of 500nm.
Concrete, when said thin film transistor (TFT) and pixel electrode were positioned on the same substrate, said thin film transistor (TFT) drained and is connected with pixel electrode through via hole.
Concrete, when said thin film transistor (TFT) and pixel electrode are positioned on the different substrate, also be provided with the interlayer joint pin between said first substrate and second substrate, said interlayer joint pin is used for thin film transistor (TFT) drained and is connected with pixel electrode.
The utility model also provides a kind of display device, comprise above-mentioned display panel and with the thin film transistor (TFT) of said display panels driving circuit one to one.
(3) beneficial effect
The utility model utilizes the selective reflecting characteristic of cholesteric liquid crystal; Employing has the cholesteric crystal layer of fixed pitch and controls catoptrical wavelength; Simultaneously, also adopt PDLC to realize control, saved oriented layer and polaroid intensity of reflected light; Simplify preparation technology, improved the utilization factor of light source.
Description of drawings
Fig. 1 is the structural representation of a kind of display panel of providing of the utility model embodiment;
Fig. 2 is the structural representation of the another kind of display panel that provides of the utility model embodiment;
Fig. 3 is the structural representation of a kind of display device of providing of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
As shown in Figure 1; The display panel of present embodiment comprises: first substrate 1; Second substrate 2 is arranged at pixel electrode 3 and thin film transistor (TFT) 7 on first substrate, is arranged at the liquid crystal layer between first substrate 1 and second substrate 2; This liquid crystal layer comprises between first liquid crystal layer 5 and second liquid crystal layer, 6, the first liquid crystal layers 5 and second liquid crystal layer 6 and is provided with public electrode 4.
Wherein, first liquid crystal layer is a PDLC, and second liquid crystal layer comprises a plurality of color liquid crystals unit; Each color liquid crystal unit comprises the first color liquid crystal subelement 601; The second color liquid crystal subelement, 602, the three color liquid crystal subelements, 603, the first color liquid crystal subelements 601 comprise the cholesteric liquid crystal of first pitch; The second color liquid crystal subelement 602 comprises the cholesteric liquid crystal of second pitch, and the 3rd color liquid crystal subelement comprises the cholesteric liquid crystal of the 3rd pitch.In this programme; The first color liquid crystal subelement 601 is preferably the red liquid crystal subelement; The second color liquid crystal subelement 602 is preferably the green liquid crystal subelement, and the 3rd color liquid crystal subelement 603 is preferably the blue liquid crystal subelement, and is corresponding; First pitch is preferably 620～740nm, more preferably can be set to 700nm; Second pitch is preferably 505～570nm, more preferably can be set to 540nm; The 3rd pitch is preferably 445～505nm, more preferably can be set to 500nm.Thin film transistor (TFT) 7 is corresponding one by one with each color liquid crystal subelement, is used to control the liquid crystal deflecting element of the first regional liquid crystal layer 5 of each color liquid crystal subelement.The drain electrode of thin film transistor (TFT) 7 and pixel electrode 3 are arranged on the same substrate, and connect through via hole.
Cholesteric liquid crystal is a reflection-type; And have very high reflectivity (＞90%), also have the selective reflecting characteristic simultaneously, also different according to the optical wavelength of the difference of cholesteric liquid crystal pitch reflection; So control pitch can be controlled catoptrical wavelength, to show various colors.And the control of cholesteric liquid crystal pitch can fix adjusting through adding photo-curing compound.Utilize this special optical property of cholesteric liquid crystal, can be introduced into the function that realizes color film in the display panel.Concrete; When extraneous light is injected display panel and is arrived second liquid crystal layer; The first color liquid crystal subelement, 601 reflection wavelengths are the ruddiness of 620～740nm, and the second color liquid crystal subelement, 602 reflection wavelengths are the green glow of 505～570nm, and the 3rd color liquid crystal subelement 603 reflection wavelengths are the blue light of 445～505nm; Reflection ray penetrates panel through first liquid crystal layer 5 again; The control of the light intensity through 5 pairs of three wavelength coverages of first liquid crystal layer can show shades of colour, realizes colored the demonstration.
This programme is controlled catoptrical wavelength through the cholesteric crystal layer that employing has fixed pitch, simultaneously, adopts PDLC to control catoptrical intensity, has saved polaroid and the oriented layer in the conventional display panels, has simplified technology, has improved the utilization factor of light source.
As shown in Figure 2; Present embodiment has been realized a kind of reflective display panel, comprising: first substrate, 1, the second substrate 2; Be arranged at the public electrode 4 on first substrate and be arranged at the thin film transistor (TFT) 7 on second substrate; Be arranged at the liquid crystal layer between first substrate 1 and second substrate 2, this liquid crystal layer comprises between first liquid crystal layer 5 and second liquid crystal layer, 6, the first liquid crystal layers 5 and second liquid crystal layer 6 and is provided with pixel common electrode 4.
Wherein, first liquid crystal layer is a PDLC, and second liquid crystal layer comprises a plurality of color liquid crystals unit; Each color liquid crystal unit comprises the first color liquid crystal subelement 601; The second color liquid crystal subelement, 602, the three color liquid crystal subelements, 603, the first color liquid crystal subelements 601 comprise the cholesteric liquid crystal of first pitch; The second color liquid crystal subelement 602 comprises the cholesteric liquid crystal of second pitch, and the 3rd color liquid crystal subelement comprises the cholesteric liquid crystal of the 3rd pitch.In this programme; The first color liquid crystal subelement 601 is preferably the red liquid crystal subelement; The second color liquid crystal subelement 602 is preferably the green liquid crystal subelement, and the 3rd color liquid crystal subelement 603 is preferably the blue liquid crystal subelement, and is corresponding; First pitch is preferably 620～740nm, more preferably can be set to 700nm; Second pitch is preferably 505～570nm, more preferably can be set to 540nm; The 3rd pitch is preferably 445～505nm, more preferably can be set to 500nm.Thin film transistor (TFT) 7 is corresponding one by one with each color liquid crystal subelement, is used to control the liquid crystal deflecting element of the first regional liquid crystal layer 5 of each color liquid crystal subelement.Be provided with second liquid crystal layer in the middle of the drain electrode of thin film transistor (TFT) 7 and the pixel electrode 3, therefore need to link to each other through interlayer joint pin 8.
Adopt among principle of work that the cholesteric liquid crystal of fixed pitch replaces color rete and the embodiment 1 identically in the present embodiment, repeat no more at this.Embodiment 2 is that with the distinctive points of embodiment 1 drain electrode of thin film transistor (TFT) 7 is to be connected through interlayer joint pin 8 with pixel electrode, rather than adopts the connected mode of via hole.
As shown in Figure 3, present embodiment provide a kind of display panel that comprises the foregoing description 1 or embodiment 2 display device and with the thin film transistor (TFT) of the display panel of embodiment 1 or embodiment 2 driving circuit 9 one to one.This display device comprises: LCD TV, LCD, DPF, mobile phone, panel computer etc.
Need to prove; Preferred color liquid crystal unit comprises redgreenblue liquid crystal subelement in this programme; But be not limited only to this three dichroic liquid crystals subelement; All combinations that can realize being mixed into the liquid crystal subelement of white light effect all should be included in the protection domain of the utility model, when adopting the liquid crystal subelement of other colors, select for use with the liquid crystal subelement and want the cholesteric liquid crystal of the corresponding pitch of catoptrical color can realize identical effect.
Above embodiment only is used to explain the utility model; And be not the restriction to the utility model; The those of ordinary skill in relevant technologies field under the situation of spirit that does not break away from the utility model and scope, can also be made various variations and modification; Therefore all technical schemes that are equal to also belong to the category of the utility model, and the scope of patent protection of the utility model should be defined by the claims.
Claims (8)
1. display panel; Comprise first substrate, second substrate, thin film transistor (TFT), pixel electrode, public electrode and be arranged at first substrate and second substrate between liquid crystal layer; It is characterized in that; Said liquid crystal layer comprises first liquid crystal layer and second liquid crystal layer, and said first liquid crystal layer is a polymer dispersed liquid crystal layer; Said second liquid crystal layer comprises a plurality of color liquid crystals unit; Said each color liquid crystal unit comprises the first color liquid crystal subelement; The second color liquid crystal subelement and the 3rd color liquid crystal subelement, the said first color liquid crystal subelement comprises the cholesteric liquid crystal of first pitch; The said second color liquid crystal subelement comprises the cholesteric liquid crystal of second pitch; Said the 3rd color liquid crystal subelement comprises the cholesteric liquid crystal of the 3rd pitch.
2. display panel as claimed in claim 1 is characterized in that, the said first color liquid crystal subelement is the red liquid crystal subelement, and the said second color liquid crystal subelement is the green liquid crystal subelement, and said the 3rd color liquid crystal subelement is the blue liquid crystal subelement; Said first pitch is 620～740nm, and said second pitch is 505～570nm, and said the 3rd pitch is 445～505nm.
3. display panel as claimed in claim 2 is characterized in that, said red liquid crystal subelement comprises that pitch is the cholesteric liquid crystal of 700nm.
4. display panel as claimed in claim 2 is characterized in that, said green liquid crystal subelement comprises that pitch is the cholesteric liquid crystal of 540nm.
5. display panel as claimed in claim 2 is characterized in that, said blue liquid crystal subelement comprises that pitch is the cholesteric liquid crystal of 500nm.
6. display panel as claimed in claim 1 is characterized in that, when said thin film transistor (TFT) and pixel electrode were positioned on the same substrate, the drain electrode of said thin film transistor (TFT) was connected with pixel electrode through via hole.
7. display panel as claimed in claim 1; It is characterized in that; When said thin film transistor (TFT) and pixel electrode are positioned on the different substrate; Also be provided with the interlayer joint pin between said first substrate and second substrate, said interlayer joint pin is used for the drain electrode of thin film transistor (TFT) is connected with pixel electrode.
8. a display device is characterized in that, comprise as each described display panel in the claim 1～7 and with the thin film transistor (TFT) of said display panels driving circuit one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200964728U CN202453607U (en) | 2012-03-14 | 2012-03-14 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200964728U CN202453607U (en) | 2012-03-14 | 2012-03-14 | Display panel and display device |
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| CN202453607U true CN202453607U (en) | 2012-09-26 |
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| CN2012200964728U Expired - Fee Related CN202453607U (en) | 2012-03-14 | 2012-03-14 | Display panel and display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091891A (en) * | 2013-01-18 | 2013-05-08 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method thereof and liquid crystal display device |
| CN104199225A (en) * | 2014-08-21 | 2014-12-10 | 京东方科技集团股份有限公司 | Display panel, manufacturing method of display panel and display device |
| CN106200094A (en) * | 2016-07-08 | 2016-12-07 | 京东方科技集团股份有限公司 | A kind of reflective display and preparation method thereof |
| WO2017028326A1 (en) * | 2015-08-14 | 2017-02-23 | 深圳市华星光电技术有限公司 | Blue light prevention polarizer and liquid crystal display panel |
| CN107065293A (en) * | 2017-06-28 | 2017-08-18 | 京东方科技集团股份有限公司 | A kind of preparation method of beam-splitting structure, display panel and beam-splitting structure |
| CN113138491A (en) * | 2021-04-27 | 2021-07-20 | 武汉华星光电技术有限公司 | Display panel and display device |
-
2012
- 2012-03-14 CN CN2012200964728U patent/CN202453607U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091891A (en) * | 2013-01-18 | 2013-05-08 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method thereof and liquid crystal display device |
| CN103091891B (en) * | 2013-01-18 | 2015-06-17 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method thereof and liquid crystal display device |
| CN104199225A (en) * | 2014-08-21 | 2014-12-10 | 京东方科技集团股份有限公司 | Display panel, manufacturing method of display panel and display device |
| WO2017028326A1 (en) * | 2015-08-14 | 2017-02-23 | 深圳市华星光电技术有限公司 | Blue light prevention polarizer and liquid crystal display panel |
| CN106200094A (en) * | 2016-07-08 | 2016-12-07 | 京东方科技集团股份有限公司 | A kind of reflective display and preparation method thereof |
| CN107065293A (en) * | 2017-06-28 | 2017-08-18 | 京东方科技集团股份有限公司 | A kind of preparation method of beam-splitting structure, display panel and beam-splitting structure |
| CN113138491A (en) * | 2021-04-27 | 2021-07-20 | 武汉华星光电技术有限公司 | Display panel and display device |
| WO2022227120A1 (en) * | 2021-04-27 | 2022-11-03 | 武汉华星光电技术有限公司 | Display panel and display apparatus |
| US11934078B2 (en) | 2021-04-27 | 2024-03-19 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display panel and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20210314 |
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| CF01 | Termination of patent right due to non-payment of annual fee |