CN102654680A - Transflective liquid crystal display - Google Patents
Transflective liquid crystal display Download PDFInfo
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- CN102654680A CN102654680A CN2011104215494A CN201110421549A CN102654680A CN 102654680 A CN102654680 A CN 102654680A CN 2011104215494 A CN2011104215494 A CN 2011104215494A CN 201110421549 A CN201110421549 A CN 201110421549A CN 102654680 A CN102654680 A CN 102654680A
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- infrabasal plate
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Abstract
The embodiment of the invention discloses a transflective liquid crystal display, belonging to the field of manufacturing of liquid crystal display. The transflective liquid crystal display comprises blue phase liquid crystal layers which are oppositely arranged, are divided into an upper substrate and a lower substrate and are filled between the upper substrate and the lower substrate; the thicknesses of liquid crystal boxes in a transmission region and in a reflection region are equal, and wall-shaped electrodes with the same structure and equal intervals are arranged in the transmission region and the reflection region; and voltage difference UT between the wall-shaped electrode and an adjacent wall-shaped electrode in the transmission region and voltage difference UF between the wall-shaped electrode and an adjacent wall-shaped electrode in the reflection region can meet the condition (described in the specification). According to the invention, electro-optic characteristics of the transmission region and the reflection region can be guaranteed to be matched, thus liquid crystal response times of the transmission region and the reflection region are the same, manufacturing difficulty of a display is reduced, and better viewing angle can be realized. The embodiment of the invention is applicable to manufacturing of the liquid crystal display.
Description
Technical field
The present invention relates to transflective lcd and make the field, relate in particular to the thick transflective lcd of a kind of single box.
Background technology
Transflective lcd has the reflective display outstanding reading performance of the down excellent reading performance of sunlight and full-transparency type display back lighting under unglazed, low light environment out of doors concurrently, thereby is widely used in fields such as aircraft Displaying Meter, Vehicular display device, high-end mobile phone, portable computer.
The sub-pixel of transflective lcd is made up of transmission area and echo area, and transmission area adopts backlight luminous, and light only passes liquid crystal layer once; The echo area then relies on the reflect ambient light source luminescent, and light need pass liquid crystal layer twice.This optical path difference that makes light pass the echo area is 2 times of transmission area, causes the echo area can not obtain same light electrical characteristics, i.e. photoelectric characteristic matching problem simultaneously.For this reason, can adopt the dual-box thick structure, promptly the liquid crystal cell of transmission area is thick is thick 2 times of echo area liquid crystal cell, and the optical path difference that makes light pass transmission area equates with the optical path difference of passing the echo area.But the thick meeting of different boxes causes transmission area and echo area liquid crystal response asynchronism(-nization), also can increase the difficulty and raising production cost of manufacturing process.
Summary of the invention
Embodiments of the invention provide a kind of transflective lcd, under the prerequisite that guarantees the photoelectric characteristic coupling, make that the liquid crystal response time of transmission area and echo area is identical, have reduced the manufacture difficulty of display simultaneously.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The embodiment of the invention provides a kind of transflective lcd, comprising: be oppositely arranged and be divided into the upper substrate and the infrabasal plate of transmission area and echo area, and wall shape electrode and liquid crystal layer between upper substrate and infrabasal plate;
Upper substrate comprises upper substrate glass from top to bottom successively, upper substrate 1/4th retardation plates, upper substrate 1/2nd retardation plates and upper substrate polaroid;
Infrabasal plate comprises insulation course from top to bottom successively, is arranged on the inner reflection horizon of echo area insulation course, lower baseplate glass, infrabasal plate 1/4th retardation plates, infrabasal plate 1/2nd retardation plates and infrabasal plate polaroid;
Wherein, Said upper substrate 1/4th retardation plates are vertical each other with infrabasal plate 1/4th retardation plate optical axises; Upper substrate 1/2nd retardation plates are vertical each other with infrabasal plate 1/2nd retardation plate optical axises, and the upper substrate polaroid is vertical each other with infrabasal plate polaroid absorption axes;
Said liquid crystal layer is the blue phase liquid crystal material;
The thick d of liquid crystal cell of said upper substrate and infrabasal plate transmission area and echo area is identical; And be provided with wall shape electrode between upper substrate and the infrabasal plate, said wall shape electrode one end contacts with said upper substrate, and the other end contacts with said insulation course, and each wall shape electrode structure is identical, the interval equates;
At the said wall shape electrode of said transmission area and the voltage difference U between the adjacent wall shape electrode
TAnd at the said wall shape electrode of said echo area and the voltage difference U between the adjacent wall shape electrode
FSatisfy
Under electric field action, according to Kerr effect, light can produce optical path difference Δ n=λ kE through blue phase liquid crystal layer
2The embodiment of the invention is at the wall shape electrode of said transmission area and the voltage difference U between the adjacent wall shape electrode
TAnd be positioned at the wall shape electrode of said echo area and the voltage difference U between the adjacent wall shape electrode (27)
FSatisfy
Again because transmission area is equal with echo area wall shape electrode gap L in the embodiment of the invention, then: E
T=U
T/ L, E
F=U
FSo/L is E
T 2=2E
F 2Therefore, at E
TAnd E
FUnder the electric field action, light is 2 times that light passes through the echo area optical path difference through the optical path difference of transmission area.Again because twice process of echo area light liquid crystal layer; So light has identical optical path difference through transmission area and echo area; Promptly have identical delay, can obtain the same light electrical characteristics simultaneously, pass the photoelectric characteristic matching problem that transmission area and echo area produce thereby solved light.Simultaneously, transmission area and echo area have equal thickness of liquid crystal box, and this just under the prerequisite that guarantees the photoelectric characteristic coupling, makes that the liquid crystal response time of transmission area and echo area is identical, has reduced the manufacture difficulty of display simultaneously.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the transflective lcd that Fig. 1 provides for the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
A kind of transflective lcd that Fig. 1 provides for the embodiment of the invention; Comprise: the upper substrate 10 and infrabasal plate 20 that are oppositely arranged and are divided into transmission area and echo area; And being filled in the liquid crystal layer 30 between upper substrate 10 and the infrabasal plate 20, liquid crystal layer 30 is identical blue phase liquid crystal materials.
Upper substrate 10 is provided with upper substrate glass 11 from top to bottom successively, upper substrate 1/4th retardation plates 12, upper substrate 1/2nd retardation plates 13 and upper substrate polaroid 14;
Infrabasal plate 20 comprises insulation course 25 from top to bottom successively, is arranged on the inner reflection horizon 26 of echo area insulation course, lower baseplate glass 21, infrabasal plate 1/4th retardation plates 22, infrabasal plate 1/2nd retardation plates 23 and infrabasal plate polaroid 24;
Wherein, Said upper substrate 1/4th retardation plates 12 are vertical each other with infrabasal plate 1/4th retardation plates 22 optical axises; Upper substrate 1/2nd retardation plates 13 are vertical each other with infrabasal plate 1/2nd retardation plates 23 optical axises, and upper substrate polaroid 14 is vertical each other with infrabasal plate polaroid 24 absorption axes;
Be provided with length between upper substrate 10 and infrabasal plate 20 transmission areas and the echo area and equate, and the equal wall shape electrode 27 of interval L; Wall shape electrode 27 1 ends contact with upper substrate 10, and the other end contacts with insulation course 25, and like this, the thick d of liquid crystal cell of upper substrate 10 and infrabasal plate 20 transmission areas and echo area is identical;
Apply data voltage to wall shape electrode 27, and make at the wall shape electrode 27 of transmission area and the voltage difference U between the adjacent wall shape electrode 27
TAnd at the wall shape electrode 27 of echo area and the voltage difference U between the adjacent wall shape electrode 27
FAll the time satisfy
As the voltage signal U that imposes on transmission area wall shape electrode 27
TWith the voltage signal U that imposes on echo area wall shape electrode 27
FBetween satisfy U
T=1.414U
F, equate because of transmission area in the embodiment of the invention and echo area wall shape electrode 27 corresponding lengths again, and L equates at interval that then transmission area and echo area produce uniform electric field E respectively
TAnd E
F, and E
T=U
T/ L, E
F=U
FSo/L is the electric field strength E of transmission area
TElectric field strength E with the echo area
FThen satisfy E
T 2=2E
F 2Because blue phase liquid crystal layer 30 thickness are identical in the present embodiment, under electric field action, according to Kerr effect, the light through blue phase liquid crystal layer 30 can produce optical path difference Δ n=λ kE
2Therefore, at E
TAnd E
FUnder the electric field action; Light is 2 times that light passes through echo area blue phase liquid crystal layer 30 optical path differences through the optical path difference of transmission area blue phase liquid crystal layer 30; Again because twice process of echo area light blue phase liquid crystal layer 30 so light has identical optical path difference through transmission area and echo area, promptly has identical delay; Can obtain the same light electrical characteristics simultaneously, solve the photoelectric characteristic matching problem that light passes transmission area and echo area generation.Simultaneously, transmission area and echo area have equal thickness of liquid crystal box d, and this just under the prerequisite that guarantees the photoelectric characteristic coupling, makes that the liquid crystal response time of transmission area and echo area is identical, has reduced the manufacture difficulty of display simultaneously.
In addition, the present embodiment liquid crystal layer adopts the demonstration of blue phase liquid crystal material to have following advantage:
1, do not need oriented layer, simplified technology, reduced manufacturing cost simultaneously;
2, the response time can realize that at inferior Millisecond colored sequential shows, solves look and splits problem;
When 3, being in dark attitude, no light leak and visual angle symmetry;
When 4, thickness of liquid crystal box surpassed the maximum penetration of Kerr effect, transmitance was insensitive to the variation of box thickness.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of said claim.
Claims (2)
1. transflective lcd comprises:
Be oppositely arranged and be divided into the upper substrate (10) and the infrabasal plate (20) of transmission area and echo area, and be positioned at the liquid crystal layer (30) between upper substrate (10) and the infrabasal plate (20);
Upper substrate (10) comprises upper substrate glass (11) from top to bottom successively, upper substrate 1/4th retardation plates (12), upper substrate 1/2nd retardation plates (13) and upper substrate polaroid (14);
Infrabasal plate (20) comprises insulation course (25) from top to bottom successively, is arranged on the inner reflection horizon (26) of echo area insulation course, lower baseplate glass (21), infrabasal plate 1/4th retardation plates (22), infrabasal plate 1/2nd retardation plates (23) and infrabasal plate polaroid (24);
Wherein, Said upper substrate 1/4th retardation plates (12) are vertical each other with infrabasal plate 1/4th retardation plates (22) optical axis; Upper substrate 1/2nd retardation plates (13) are vertical each other with infrabasal plate 1/2nd retardation plates (23) optical axis, and upper substrate polaroid (14) is vertical each other with infrabasal plate polaroid (24) absorption axes; It is characterized in that,
Said liquid crystal layer (30) is the blue phase liquid crystal material;
The thick d of liquid crystal cell of said upper substrate (10) and infrabasal plate (20) transmission area and echo area is identical; And be provided with wall shape electrode (27) between upper substrate (10) and the infrabasal plate (20), said wall shape electrode (27) one ends contact with said upper substrate (10), and the other end contacts with said insulation course (25), and each wall shape electrode (27) structure is identical, L equates at interval;
Be positioned at the said wall shape electrode (27) of said transmission area and the voltage difference U between the adjacent wall shape electrode (27)
TAnd be positioned at the said wall shape electrode (27) of said echo area and the voltage difference U between the adjacent wall shape electrode (27)
FSatisfy
2. transflective lcd as claimed in claim 1 is characterized in that, an end of said wall shape electrode (27) contacts with said upper substrate (10), and the other end contacts with said insulation course (25).
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| CN201110421549.4A CN102654680B (en) | 2011-12-15 | 2011-12-15 | Transflective liquid crystal display |
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| CN201110421549.4A CN102654680B (en) | 2011-12-15 | 2011-12-15 | Transflective liquid crystal display |
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| CN102654680B CN102654680B (en) | 2014-08-06 |
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Cited By (6)
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| CN102879958A (en) * | 2012-09-28 | 2013-01-16 | 京东方科技集团股份有限公司 | Array substrate, method for manufacturing same and liquid crystal display device |
| CN103792721A (en) * | 2014-01-22 | 2014-05-14 | 京东方科技集团股份有限公司 | Semi-transparent and semi-reflecting liquid crystal display panel, manufacturing method thereof and display device |
| CN103969899A (en) * | 2014-04-25 | 2014-08-06 | 京东方科技集团股份有限公司 | Semi-transmission and semi-reflection liquid crystal display panel and liquid crystal display |
| US20140307206A1 (en) * | 2012-07-27 | 2014-10-16 | Boe Technology Group., Ltd. | Blue phase liquid crystal panel and display device |
| CN104267528A (en) * | 2014-09-23 | 2015-01-07 | 京东方科技集团股份有限公司 | Reflecting type display device |
| CN104991386A (en) * | 2015-08-04 | 2015-10-21 | 武汉华星光电技术有限公司 | Transflective blue-phase liquid crystal panel |
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Cited By (10)
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|---|---|---|---|---|
| US20140307206A1 (en) * | 2012-07-27 | 2014-10-16 | Boe Technology Group., Ltd. | Blue phase liquid crystal panel and display device |
| US9140936B2 (en) * | 2012-07-27 | 2015-09-22 | Boe Technology Group Co., Ltd. | Blue phase liquid crystal panel and display device |
| CN102879958A (en) * | 2012-09-28 | 2013-01-16 | 京东方科技集团股份有限公司 | Array substrate, method for manufacturing same and liquid crystal display device |
| CN103792721A (en) * | 2014-01-22 | 2014-05-14 | 京东方科技集团股份有限公司 | Semi-transparent and semi-reflecting liquid crystal display panel, manufacturing method thereof and display device |
| CN103969899A (en) * | 2014-04-25 | 2014-08-06 | 京东方科技集团股份有限公司 | Semi-transmission and semi-reflection liquid crystal display panel and liquid crystal display |
| CN104267528A (en) * | 2014-09-23 | 2015-01-07 | 京东方科技集团股份有限公司 | Reflecting type display device |
| WO2016045379A1 (en) * | 2014-09-23 | 2016-03-31 | 京东方科技集团股份有限公司 | Reflecting type display device |
| CN104267528B (en) * | 2014-09-23 | 2017-01-18 | 京东方科技集团股份有限公司 | Reflecting type display device |
| US9835901B2 (en) | 2014-09-23 | 2017-12-05 | Boe Technology Group Co., Ltd. | Reflective type display device |
| CN104991386A (en) * | 2015-08-04 | 2015-10-21 | 武汉华星光电技术有限公司 | Transflective blue-phase liquid crystal panel |
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