CN102944956B - Semitransparent and semi-reflective liquid crystal display device - Google Patents
Semitransparent and semi-reflective liquid crystal display device Download PDFInfo
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- CN102944956B CN102944956B CN201210459303.0A CN201210459303A CN102944956B CN 102944956 B CN102944956 B CN 102944956B CN 201210459303 A CN201210459303 A CN 201210459303A CN 102944956 B CN102944956 B CN 102944956B
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Abstract
The invention provides a semitransparent and semi-reflective liquid crystal display device, which comprises a first substrate, a second substrate and a liquid crystal layer, wherein the second substrate is arranged opposite to the first substrate; the liquid crystal layer is formed between the first substrate and the second substrate; a transmission region and a reflecting region are formed between the first substrate and the second substrate; liquid crystal box thicknesses of the transmission region and the reflecting region are equal to each other; a part on the first substrate which corresponds to the reflecting region is provided with a first pixel electrode; the second substrate is provided with a public electrode corresponding to the transmission region and the reflecting region; the second substrate is further provided with a first insulating layer positioned on the public electrode; and a part on the second substrate which corresponds to the transmission region is further provided with a plurality of second pixel electrodes which are positioned on the first insulating layer and are arranged at certain intervals. Due to the adoption of the scheme of the invention, a semitransparent and semi-reflective display effect can be realized; and due to the adoption of an electrode structure in the reflecting region, the display visual angle is expanded, and the contrast is increased; and a single box thickness structure is adopted, so that the difficulty of a process can be lowered.
Description
Technical field
The present invention relates to liquid crystal indicator field, refer to a kind of Transflective liquid crystal display device especially.
Background technology
Panel of LCD is generally become box-like with array base palte by color membrane substrates, is packaged with liquid crystal layer in the space between two substrates; Because liquid crystal molecule self is not luminous, so display panel needs light source to show image, according to the difference adopting light source type, liquid crystal display can be divided into transmission-type, reflective and Transflective.
Wherein, the display panels of transmission-type, mainly using backlight as light source, is provided with backlight after liquid crystal panel, the pixel electrode on array base palte be transparency electrode as transmission area, the ght transmission being conducive to backlight through liquid crystal layer to show image;
Reflecting type liquid crystal display panel is mainly using front light-source or external light source as light source, and its array base palte adopts metal or other reflecting electrodes with good reflection elastomeric material as echo area, is suitable for the light reflection by front light-source or external light source;
Transreflective liquid crystal display panel then can be considered the combination of transmission-type and reflecting type liquid crystal display panel, and array base palte is both provided with echo area, is provided with transmission area again, and backlight and front light-source or external light source can be utilized to show simultaneously.
The advantage of transmissive liquid crystal display panel can show bright image under dark environment, but shortcoming is permeable light, and to account for the ratio of backlight emission of light less, backlight utilization factor is not high, and just need for improving display brightness the brightness increasing substantially backlight, therefore energy consumption is high.
The advantage of reflecting type liquid crystal display panel to utilize external light source, and power consumption is relatively low, but shortcoming in the dark cannot show image due to the dependence to external light source.
Transreflective liquid crystal display panel has the advantage of transmission-type and reflecting type liquid crystal display panel concurrently, both can show bright image under dark environment, indoor use, also can in outdoor application.Therefore, it is widely used in the display device of Portable movable electronic product, as mobile phone, and digital camera, palm PC, the mobile products such as GPRS.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Transflective liquid crystal display device, adopts new electrode structure, can realize semi-transparent semi-reflecting display effect.Meanwhile, the electrode structural designs that echo area adopts expands display view angle, improves contrast, adopts structure that single box is thick can the difficulty of Simplified flowsheet.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of Transflective liquid crystal display device, comprising: first substrate; The second substrate be oppositely arranged with first substrate; Be arranged at the liquid crystal layer between first substrate and second substrate; Comprise between first substrate and second substrate: regional transmission and reflector space; The liquid crystal cell of regional transmission and reflector space is thick equal; The part corresponding to reflector space above described first substrate is provided with first pixel electrode; Above described second substrate, regional transmission and reflector space are provided with public electrode; The first insulation course be positioned on described public electrode is also provided with above described second substrate; Correspond to the part of regional transmission above described second substrate, be also provided with spaced multiple second pixel electrodes be positioned on described first insulation course.
Wherein, the width of described first pixel electrode is the first value;
Described multiple second equidistant interval of pixel electrode is arranged, and the spacing distance between adjacent two the second pixel electrodes is the second value;
The size of described first value and described second value is: when light is matched by the phase-delay quantity of the liquid crystal of described reflector space by the phase-delay quantity of the liquid crystal of described regional transmission and light, corresponding size.
Wherein, the liquid crystal of described liquid crystal layer is positivity liquid crystal;
Side near described liquid crystal layer above described first substrate is also provided with corresponding to whole regional transmission and reflector space, and covers the first oriented layer of described first pixel electrode;
Side near described liquid crystal layer above described second substrate is also provided with corresponding to whole regional transmission and reflector space and covers the second oriented layer of described second pixel electrode.
Wherein, described first oriented layer and described second oriented layer are adopt to make described positivity liquid crystal be the polyimide material be vertically oriented when not powering up.
Wherein, part second substrate corresponding to described reflector space is also provided with reflection horizon.
Wherein, described second substrate be also provided with corresponding to whole regional transmission and reflector space and cover second insulation course in described reflection horizon, described public electrode is positioned on described second insulation course.
Wherein, described first substrate is also provided with the first polaroid, described second substrate is also provided with the second polaroid.
The beneficial effect of technique scheme of the present invention is as follows:
In such scheme, by the design of the electrode structure to regional transmission and reflector space, semi-transparent semi-reflecting display effect can be realized.Meanwhile, the electrode structural designs that echo area adopts expands display view angle, improves contrast, adopts structure that single box is thick can the difficulty of Simplified flowsheet.
Accompanying drawing explanation
Fig. 1 be the thick semi-transparent semi-reflecting display device of single box of the present invention embodiment 1 not making alive time structural representation;
Structural representation when Fig. 2 is embodiment 1 making alive of the thick semi-transparent semi-reflecting display device of single box of invention;
Fig. 3 be the thick semi-transparent semi-reflecting display of single box of the present invention embodiment 1 not making alive time schematic top plan view;
Schematic top plan view when Fig. 4 is embodiment 1 making alive of single box of the present invention thick semi-transparent semi-reflecting display.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As Figure 1-Figure 4, embodiments of the invention provide a kind of Transflective liquid crystal display device, comprising: first substrate 12; The second substrate 101 be oppositely arranged with first substrate 12; Be arranged at the liquid crystal layer 14 between first substrate 12 and second substrate 101; Comprise between first substrate 12 and second substrate 101: regional transmission and reflector space; The liquid crystal cell of regional transmission and reflector space is thick equal; The part corresponding to reflector space above first substrate 12 is provided with first pixel electrode 13; The whole part corresponding to regional transmission and reflector space above second substrate 101 is provided with public electrode 17; The first insulation course 16 be positioned on public electrode 17 is also provided with above second substrate 101; Correspond to the part of regional transmission above second substrate 101, be also provided with spaced multiple second pixel electrodes 15 be positioned on the first insulation course 16.
Wherein, the width of the first pixel electrode 13 is the first value; Multiple second pixel electrode 15 equidistantly interval is arranged, and the spacing distance between adjacent two the second pixel electrodes 15 is the second value;
The size of the first value and the second value is: when light is matched by the phase-delay quantity of the liquid crystal of reflector space by the phase-delay quantity of the liquid crystal of regional transmission and light, corresponding size.
Wherein, first substrate 2 is also provided with the first polaroid 11, second substrate 101 is also provided with the second polaroid 19.The reflection horizon 18 of reflector space is arranged in the second insulation course 104 on second substrate 101.
As shown in Figure 1, the liquid crystal of liquid crystal layer 14 is positivity liquid crystal; First substrate 12 is also provided with corresponding to whole regional transmission and reflector space, and covers the first oriented layer 102 of the first pixel electrode 13; Second substrate 101 is also provided with corresponding to whole regional transmission and reflector space, and covers the second oriented layer 103 of the second pixel electrode 15; Preferably, the material of the first oriented layer 102 and the second oriented layer 103 is positivity liquid crystal is the PI(polyimide be vertically oriented when not powering up) material.
At regional transmission and reflector space, embodiments of the invention at first substrate 12(as color membrane substrates) and second substrate 101(as array base palte) oriented layer use the polyimide material that liquid crystal is vertically oriented when not powering up, dark-state light leak can be reduced, improve contrast.The light of regional transmission and reflector space can not produce optical path difference through the liquid crystal layer be vertically oriented.Because the polarization direction of emergent ray does not change, so will be blocked completely by color film polaroid (i.e. above-mentioned first polaroid 11), realize the display of dark-state.Fig. 3 is the vertical view of Fig. 1.
As shown in Figure 2 and Figure 4, Fig. 4 is the vertical view of Fig. 2, at regional transmission, embodiments of the invention adopt the electrode structure of ADS pattern, during making alive, the horizontal mode that the positivity liquid crystal 14 of regional transmission gradually becomes as shown in Figure 2 due to the impact by horizontal component of electric field, produces the phase delay of horizontal direction;
At reflector space, embodiments of the invention adopt the electrode structure of ASV pattern, during making alive, the arranging situation that the positivity liquid crystal molecule of reflector space gradually becomes as shown in Figure 2 due to the impact by ASV mode electric field, produces the phase delay of less horizontal direction.
Light postpone for △ n1 if can produce larger horizontal phase by the positivity liquid crystal of regional transmission under horizontal component of electric field effect; The horizontal phase that the positivity liquid crystal of reflector space is less because the impact being subject to ASV mode electric field produces under tilting electric field effect postpones for △ n2.
Can, by the optimization of the width (i.e. above-mentioned first value) to regional transmission second pixel electrode spacing (i.e. above-mentioned second value) and reflector space first pixel electrode 13, make the light through regional transmission can produce phase delay more more than reflector space;
To realize anti-display, light is needed to be matched by the phase-delay quantity of the liquid crystal of reflector space by the phase-delay quantity of the liquid crystal of regional transmission and light;
And for regional transmission and reflector space, if the phase delay of whole regional transmission liquid crystal under the effect of electric field is 2 times of reflector space, i.e. △ n1/ △ n2=2, regional transmission light is the half of reflector space light by the light path of liquid crystal by the light path of liquid crystal, i.e. dn=dm/2; Whole structure is seen, △ n1 × dn=△ n2 × dm; The phase-delay quantity of the liquid crystal of regional transmission and the liquid crystal of reflector space matches, and finally reaches semi-transparent semi-reflecting display effect.
It should be noted that: the concrete size of above-mentioned first value and the second value can experimentally obtain, but being not limited to is a certain occurrence, specifically can according to following method of testing for the panel comprising specific a kind of positivity liquid crystal, determine the size of the first value and the second value: first, different test panels is manufactured according to the several values preset, further, above-mentioned specific a kind of positivity liquid crystal is all filled in these test panels.Secondly, draw the regional transmission of these test panels and the V-T(voltage-transmitance of reflector space) curve characteristic, if the regional transmission of a test panel is consistent in error range with the curve characteristic of reflector space, then illustrate that light is roughly 2 times of the phase-delay quantity of echo area through the phase-delay quantity of regional transmission, be so worth just can as the reference value in actual production for above-mentioned first value and second of this test panel.In embodiments of the present invention restriction is not added to above-mentioned value, and be as the criterion so that the regional transmission of same pixel region, the light of reflector space can be made in actual production to be matched by the phase-delay quantity that positivity liquid crystal layer produces.
In the above embodiment of the present invention, by the change of the electrode mode to regional transmission and reflector space, semi-transparent semi-reflecting display effect can be realized.Meanwhile, the electrode structural designs of the ASV pattern that echo area adopts expands display view angle, improves contrast.Adopt structure that single box is thick can the difficulty of Simplified flowsheet.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a Transflective liquid crystal display device, comprising: first substrate; The second substrate be oppositely arranged with first substrate; Be arranged at the liquid crystal layer between first substrate and second substrate; Comprise between first substrate and second substrate: regional transmission and reflector space; The liquid crystal cell of regional transmission and reflector space is thick equal; It is characterized in that, the liquid crystal of described liquid crystal layer is positivity liquid crystal;
The part corresponding to reflector space above described first substrate is provided with first pixel electrode;
Above described second substrate, regional transmission and reflector space are provided with public electrode;
The first insulation course be positioned on described public electrode is also provided with above described second substrate;
Correspond to the part of regional transmission above described second substrate, be also provided with spaced multiple second pixel electrodes be positioned on described first insulation course;
The width of described first pixel electrode is the first value;
Described multiple second equidistant interval of pixel electrode is arranged, and the spacing distance between adjacent two the second pixel electrodes is the second value;
The size of described first value and described second value is: when light is matched by the phase-delay quantity of the liquid crystal of described reflector space by the phase-delay quantity of the liquid crystal of described regional transmission and light, corresponding size, wherein, phase-delay quantity matches and refers to, the light through regional transmission can produce phase delay more more than reflector space.
2. Transflective liquid crystal display device according to claim 1, is characterized in that,
Side near described liquid crystal layer above described first substrate is also provided with corresponding to whole regional transmission and reflector space, and covers the first oriented layer of described first pixel electrode;
Side near described liquid crystal layer above described second substrate is also provided with corresponding to whole regional transmission and reflector space and covers the second oriented layer of described second pixel electrode.
3. Transflective liquid crystal display device according to claim 2, is characterized in that, described first oriented layer and described second oriented layer are adopt to make described positivity liquid crystal be the polyimide material be vertically oriented when not powering up.
4. the Transflective liquid crystal display device according to any one of claim 1-3, is characterized in that, the part that second substrate corresponds to described reflector space is also provided with reflection horizon.
5. Transflective liquid crystal display device according to claim 4, it is characterized in that, described second substrate be also provided with corresponding to whole regional transmission and reflector space and cover second insulation course in described reflection horizon, described public electrode is positioned on described second insulation course.
6. Transflective liquid crystal display device according to claim 1, is characterized in that, described first substrate is also provided with the first polaroid, and described second substrate is also provided with the second polaroid.
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| CN201210459303.0A CN102944956B (en) | 2012-11-15 | 2012-11-15 | Semitransparent and semi-reflective liquid crystal display device |
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| CN102944956B true CN102944956B (en) | 2015-02-11 |
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| JP2006292940A (en) * | 2005-04-08 | 2006-10-26 | Sony Corp | Liquid crystal display device |
| CN101290443A (en) * | 2007-04-18 | 2008-10-22 | 乐金显示有限公司 | Liquid crystal display device and driving method thereof |
| CN101354490A (en) * | 2007-06-15 | 2009-01-28 | 奇美电子股份有限公司 | Half-transmission half-reflection type liquid crystal display and manufacturing method thereof |
| CN101828142A (en) * | 2007-10-30 | 2010-09-08 | 夏普株式会社 | Liquid crystal device |
| TW201115224A (en) * | 2009-10-21 | 2011-05-01 | Chi Mei Optoelectronics Corp | Liquid crystal display apparatus, liquid crystal display panel and manufacturing method and driving method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101136359B1 (en) * | 2004-11-17 | 2012-04-18 | 삼성전자주식회사 | Transflective display panel and display apparatus having the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006292940A (en) * | 2005-04-08 | 2006-10-26 | Sony Corp | Liquid crystal display device |
| CN101290443A (en) * | 2007-04-18 | 2008-10-22 | 乐金显示有限公司 | Liquid crystal display device and driving method thereof |
| CN101354490A (en) * | 2007-06-15 | 2009-01-28 | 奇美电子股份有限公司 | Half-transmission half-reflection type liquid crystal display and manufacturing method thereof |
| CN101828142A (en) * | 2007-10-30 | 2010-09-08 | 夏普株式会社 | Liquid crystal device |
| TW201115224A (en) * | 2009-10-21 | 2011-05-01 | Chi Mei Optoelectronics Corp | Liquid crystal display apparatus, liquid crystal display panel and manufacturing method and driving method thereof |
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