CN102654680B - Transflective liquid crystal display - Google Patents
Transflective liquid crystal display Download PDFInfo
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- CN102654680B CN102654680B CN201110421549.4A CN201110421549A CN102654680B CN 102654680 B CN102654680 B CN 102654680B CN 201110421549 A CN201110421549 A CN 201110421549A CN 102654680 B CN102654680 B CN 102654680B
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- upper substrate
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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 UT=sqrt(2)UF. 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 manufacture 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 excellent reading performance and full-transparency type display back lighting under unglazed, low light environment under sunlight out of doors concurrently, thereby is widely used in the 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 through liquid crystal layer once; Echo area relies on reflect ambient light source luminescent, and light needs twice through liquid crystal layer.This optical path difference that makes light pass echo area is 2 times of transmission area, causes echo area can not obtain same light electrical characteristics, i.e. photoelectric characteristic matching problem simultaneously.For this reason, can adopt dual-box thick structure, the liquid crystal cell of transmission area is thick is thick 2 times of echo area liquid crystal cell, makes light pass the optical path difference of transmission area and equates through the optical path difference of 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 of manufacturing process and improve production cost.
Summary of the invention
Embodiments of the invention provide a kind of transflective lcd, ensureing, under the prerequisite of photoelectric characteristic coupling, to make the liquid crystal response time of transmission area and echo area 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 present invention provides a kind of transflective lcd, comprising: be oppositely arranged and be divided into 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 reflection horizon of insulation course inside, echo area, lower baseplate glass, infrabasal plate 1/4th retardation plates, infrabasal plate 1/2nd retardation plates and infrabasal plate polaroid;
Wherein, described upper substrate 1/4th retardation plates are mutually vertical with infrabasal plate 1/4th retardation plate optical axises, upper substrate 1/2nd retardation plates are mutually vertical with infrabasal plate 1/2nd retardation plate optical axises, and upper substrate polaroid is mutually vertical with infrabasal plate polaroid absorption axes;
Described liquid crystal layer is blue phase liquid crystal material;
The thick d of liquid crystal cell of described upper substrate and infrabasal plate transmission area and echo area is identical; And be provided with wall shape electrode between upper substrate and infrabasal plate, described wall shape electrode one end contacts with described upper substrate, and the other end contacts with described insulation course, and each wall shape electrode structure is identical, interval equates;
Voltage difference U between described wall shape electrode and the adjacent wall shape electrode of described transmission area
tand the voltage difference U between described wall shape electrode and the adjacent wall shape electrode of described echo area
fmeet
Under electric field action, according to Kerr effect, light can produce optical path difference Δ n=λ kE by blue phase liquid crystal layer
2.The embodiment of the present invention is to the voltage difference U between the wall shape electrode in described transmission area and adjacent wall shape electrode
tand be positioned at the voltage difference U between wall shape electrode and the adjacent wall shape electrode (27) of described echo area
fmeet
again because transmission area is equal with echo area wall shape electrode gap L in the embodiment of the present invention: E
t=U
t/ L, E
f=U
f/ L, so E
t 2=2E
f 2.Therefore, at E
tand E
funder electric field action, light is 2 times that light passes through echo area optical path difference by the optical path difference of transmission area.Again due to twice process liquid crystal layer of echo area light, so light has identical optical path difference by transmission area and echo area, there is identical delay, can obtain same light electrical characteristics simultaneously, thereby solved the photoelectric characteristic matching problem of light through transmission area and echo area generation.Meanwhile, transmission area and echo area have equal thickness of liquid crystal box, and this just, ensureing, under the prerequisite of photoelectric characteristic coupling, to make the liquid crystal response time of transmission area and echo area identical, has reduced the manufacture difficulty of display simultaneously.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the transflective lcd that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A kind of transflective lcd that Fig. 1 provides for the embodiment of the present invention, comprise: the upper substrate 10 and the 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 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 reflection horizon 26 of insulation course inside, echo area, lower baseplate glass 21, infrabasal plate 1/4th retardation plates 22, infrabasal plate 1/2nd retardation plates 23 and infrabasal plate polaroid 24;
Wherein, described upper substrate 1/4th retardation plates 12 are mutually vertical with infrabasal plate 1/4th retardation plate 22 optical axises, upper substrate 1/2nd retardation plates 13 are mutually vertical with infrabasal plate 1/2nd retardation plate 23 optical axises, and upper substrate polaroid 14 is mutually vertical with infrabasal plate polaroid 24 absorption axes;
Between upper substrate 10 and infrabasal plate 20 transmission areas and echo area, be provided with length and equate, and the equal wall shape electrode 27 of interval L; Wall shape electrode 27 one end 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 the voltage difference U between wall shape electrode 27 and the adjacent wall shape electrode 27 of transmission area
tand the voltage difference U between wall shape electrode 27 and the adjacent wall shape electrode 27 of echo area
fall the time meet
When imposing on the voltage signal U of transmission area wall shape electrode 27
twith the voltage signal U that imposes on echo area wall shape electrode 27
fbetween meet U
t=1.414U
f, equate because of the length of transmission area in the embodiment of the present invention and echo area wall shape electrode 27 correspondences again, and interval L is equal, transmission area and echo area produce respectively uniform electric field E
tand E
f, and E
t=U
t/ L, E
f=U
f/ L, so the electric field strength E of transmission area
telectric field strength E with echo area
fmeet E
t 2=2E
f 2.Because 30 thickness of blue phase liquid crystal layer in the present embodiment are identical, under electric field action, according to Kerr effect, can produce optical path difference Δ n=λ kE by the light of blue phase liquid crystal layer 30
2.Therefore, at E
tand E
funder electric field action, light is 2 times that light passes through echo area blue phase liquid crystal layer 30 optical path differences by the optical path difference of transmission area blue phase liquid crystal layer 30, again due to twice process blue phase liquid crystal layer 30 of echo area light, so light has identical optical path difference by transmission area and echo area, there is identical delay, can obtain same light electrical characteristics simultaneously, solve the photoelectric characteristic matching problem of light through transmission area and echo area generation.Meanwhile, transmission area and echo area have equal thickness of liquid crystal box d, and this just, ensureing, under the prerequisite of photoelectric characteristic coupling, to make the liquid crystal response time of transmission area and echo area identical, has reduced the manufacture difficulty of display simultaneously.
In addition, the present embodiment liquid crystal layer adopts blue phase liquid crystal material to show that tool has the following advantages:
1, do not need oriented layer, simplified technique, reduced manufacturing cost simultaneously;
2, the response time, at sub-Millisecond, can be realized color sequential and show, solves look and splits problem;
3, in the time of dark state, without light leak and visual angle symmetry;
4,, when thickness of liquid crystal box exceedes the maximum penetration of Kerr effect, transmitance is insensitive to the variation of box thickness.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (1)
1. a transflective lcd, comprising:
Be oppositely arranged and be divided into 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 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, be arranged on the reflection horizon (26) of insulation course inside, echo area, lower baseplate glass (21), infrabasal plate 1/4th retardation plates (22), infrabasal plate 1/2nd retardation plates (23) and infrabasal plate polaroid (24);
Wherein, described upper substrate 1/4th retardation plates (12) are mutually vertical with infrabasal plate 1/4th retardation plates (22) optical axis, upper substrate 1/2nd retardation plates (13) are mutually vertical with infrabasal plate 1/2nd retardation plates (23) optical axis, and upper substrate polaroid (14) is mutually vertical with infrabasal plate polaroid (24) absorption axes; It is characterized in that,
Described liquid crystal layer (30) is blue phase liquid crystal material;
The thick d of liquid crystal cell of described 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 infrabasal plate (20), described wall shape electrode (27) one end contacts with described upper substrate (10), the other end contacts with described insulation course (25), and each wall shape electrode (27) structure is identical, interval L equates;
Be positioned at the voltage difference U between described wall shape electrode (27) and the adjacent wall shape electrode (27) of described transmission area
tand be positioned at the voltage difference U between described wall shape electrode (27) and the adjacent wall shape electrode (27) of described echo area
fmeet
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110421549.4A CN102654680B (en) | 2011-12-15 | 2011-12-15 | Transflective liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110421549.4A CN102654680B (en) | 2011-12-15 | 2011-12-15 | Transflective liquid crystal display |
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| CN102654680A CN102654680A (en) | 2012-09-05 |
| CN102654680B true CN102654680B (en) | 2014-08-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789101A (en) * | 2012-07-27 | 2012-11-21 | 京东方科技集团股份有限公司 | 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 |
| CN103792721B (en) * | 2014-01-22 | 2016-06-29 | 京东方科技集团股份有限公司 | A kind of semitransparent semi-inverse liquid crystal display panel and preparation method thereof, display device |
| CN103969899B (en) * | 2014-04-25 | 2017-01-04 | 京东方科技集团股份有限公司 | Semi-transparent semi-reflective liquid crystal display panel and liquid crystal 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 |
| CN104991386B (en) * | 2015-08-04 | 2019-02-19 | 武汉华星光电技术有限公司 | Transflective blue-phase liquid crystal panel |
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