CN1645230A - Semi-penetrating and semi-reflecting liquid crystal assembly, and pixel electrode structure thereof - Google Patents
Semi-penetrating and semi-reflecting liquid crystal assembly, and pixel electrode structure thereof Download PDFInfo
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- CN1645230A CN1645230A CN 200510009171 CN200510009171A CN1645230A CN 1645230 A CN1645230 A CN 1645230A CN 200510009171 CN200510009171 CN 200510009171 CN 200510009171 A CN200510009171 A CN 200510009171A CN 1645230 A CN1645230 A CN 1645230A
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Abstract
A picture element electrode consists of a penetration electrode and a reflection electrode on bottom base plate, the first and the second common electrodes formed individually in electricity on top base plate and set in position corresponding to penetration and reflection electrodes.
Description
(1) technical field
The invention relates to a kind of pixel electrode structure of semi-penetrate inverse liquid crystal display component, and particularly about a kind of contrast of semi-penetrate inverse liquid crystal display component and pixel electrode structure of reflectivity of increasing.
(2) background technology
Since portable product (Portable Product) as PDA(Personal Digital Assistant), mobile phone (Cellular Phone) and even, the consumption market of the large-sized projection TV of projector grows up fast, (Liqiuid Crystal Display, demand LCD) is also increasing for display panels.More and more consumers require the image display screen of these portable products or projection TV can present perfect display effect.
LCD Panel can be divided into penetration (Transmissive), reflective (Reflective) and three kinds of fundamental types of semi-penetrating trans (Tranflective) according to the reflection mode.Penetration LCD Panel system reaches penetration with back light and shows that its advantage is that display effect is good under ordinary ray and half-light line, but out of doors under the daylight, then is difficult for the identification displaying contents.The reflection type liquid crystal display screen does not need to add light source, and is to use the light of surrounding environment, therefore out of doors or the well-lighted indoor good display effect that has, and power consumption low than the penetration LCD Panel.The semi-penetrating trans LCD Panel then combines penetration and reflective both advantage, has been applied to products such as mobile phone or personal digital assistant at present.
Please refer to Fig. 1, it illustrates a kind of diagrammatic cross-section of single picture element of traditional semi-penetrate inverse liquid crystal display component.In single picture element, traditional semi-penetrate inverse liquid crystal display component has a penetrating region 1 and an echo area 2, and comprises a upper substrate 30 1 infrabasal plates 20, and is filled in the liquid crystal layer 40 between upper substrate 30 and the infrabasal plate 20.There is a reflecting plate 22 position with respect to echo area 2 above infrabasal plate 20, then forms a transparency electrode 24 above reflecting plate 22, and the position of this transparency electrode 24 is all corresponding with penetrating region 1 and echo area 2.30 places then form community electrode 32 at upper substrate, utilize and put on the voltage swing of transparency electrode 24 and common electrode 32, and the orientation of the liquid crystal molecule 41 in the liquid crystal layer 40 is changed to some extent, and then change the polarization direction of the light that passes through liquid crystal layer 40.
The light source of penetrating region 1 is provided by the backlight module 26 that is positioned at infrabasal plate 20 belows, shown in the incident light among Fig. 1 11; The light source of echo area 2 environment that then comes from the outside is shown in incident light 12.The penetrance of light then changes along with the difference of liquid crystal molecule 41 arrangement modes, and by the voltage swing that control is applied transparency electrode 24 and common electrode 32, display module can demonstrate the brightness of different GTGs (Gray Scale).Yet,, can cause phase delay because the incident light 11 of penetrating region 1 is different with the light path of the incident light 12 of echo area 2.Fig. 2 is the synoptic diagram of the penetrance curve of penetrating region and echo area in the traditional semi-penetrate inverse liquid crystal display component.Because the incident light 11 of penetrating region 1 is leaving after directly penetrating common electrode 32 and upper substrate 30 behind the liquid crystal layer 40, and the incident light 12 of echo area 2 from extraneous arrive at reflecting plate 22 through upper substrate 30, liquid crystal layer 40 earlier after, be reflected again and leave after passing liquid crystal layer 40 and upper substrate 30.Therefore, catoptrical phase delay approximately is the twice that penetrates light, the situation that has caused the penetrance curve of penetrating region and echo area to overlap.As shown in Figure 2, when voltage was 3.5, penetrating region 1 had presented dark completely attitude, and echo area 2 does not also arrive dark completely attitude, and this kind situation will cause degradation problem under contrast of display module not good (correlative value is low) and the reflectivity.At present,, proposed the design of double gap (Dual Gap), utilized the different problems that solve light phase delay of gap width of penetrating region and echo area in order to increase the optical efficiency of liquid crystal; Also can add designs such as scattered reflection plate in addition.Yet these traditional practices increase the complexity of processing procedure, and yield reduces, and production cost also improves relatively.
(3) summary of the invention
In view of this, purpose of the present invention is providing a kind of semi-penetrate inverse liquid crystal display component and pixel electrode structure thereof exactly, to increase the contrast and the reflectivity of semi-penetrate inverse liquid crystal display component.
Purpose according to the present invention is to propose a kind of pixel electrode structure, is applied to a semi-penetrate inverse liquid crystal display component (Transflective Liquid Crystal Display Device), and pixel electrode structure comprises:
One through electrode and a reflecting electrode are formed at an infrabasal plate place;
One first common electrode and one second common electrode are electrically to be formed at a upper substrate place independently, and first common electrode is corresponding with the position of through electrode and reflecting electrode respectively with second common electrode.
Purpose according to the present invention, system proposes a kind of semi-penetrate inverse liquid crystal display component (TransflectiveLiquid Crystal Display Device), this display module comprise plate structure on the plate structure, at least and be filled in plate structure and following plate structure between liquid crystal layer.Wherein, following plate structure comprises an infrabasal plate; A plurality of signal wire (Scan Line) and a plurality of data signal lines (Data Line) of scanning, system intersects vertically with the form of array, and those scan signal wire and those data-signal linear systems define a plurality of picture elements zone, each picture element zone system by one of adjacent to scanning signal wire and one of adjacent data signal line being defined, and have a through electrode and a reflecting electrode in each picture element zone, through electrode and reflecting electrode system are formed on the infrabasal plate; And a plurality of thin film transistor (TFT)s (TFT), and has a thin film transistor (TFT) in each picture element zone.Last plate structure comprises: a upper substrate; One first common electrode and one second common electrode are electrically to be formed on the upper substrate independently, and first common electrode is corresponding with the position of through electrode and reflecting electrode respectively with second common electrode.
(4) description of drawings
For the present invention's above-mentioned purpose, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Fig. 1 illustrates a kind of diagrammatic cross-section of single picture element of traditional semi-penetrate inverse liquid crystal display component.
Fig. 2 is the synoptic diagram of the penetrance curve of penetrating region and echo area in the traditional semi-penetrate inverse liquid crystal display component.
Fig. 3 illustrates the diagrammatic cross-section according to the single picture element of the semi-penetrate inverse liquid crystal display component of a preferred embodiment of the present invention.
Fig. 4 illustrates according to view on the single picture element of the semi-penetrate inverse liquid crystal display component of a preferred embodiment of the present invention.
Fig. 5 is the synoptic diagram according to the penetrance curve of penetrating region and echo area in the semi-penetrate inverse liquid crystal display component of a preferred embodiment of the present invention.
Fig. 6 A, 6B are respectively the reflection contrast visual angle figure of the semi-penetrate inverse liquid crystal display component of electrode structure with preferred embodiment of the present invention and traditional electrode structure.
(5) embodiment
The present invention proposes a kind of pixel electrode structure, be applied to a semi-penetrate inverse liquid crystal display component (Transflective Liquid Crystal Display Device), the penetrance curve of penetrating region and the penetrance curve of echo area are overlapped, and then improve the demonstration contrast and promote reflectivity.Below be the present invention to be done further detailed explanation with a preferred embodiment.In addition, icon omits unnecessary assembly when drawing, with the clear embodiment that shows the present invention.
Please refer to Fig. 3, it illustrates the diagrammatic cross-section according to the single picture element of the semi-penetrate inverse liquid crystal display component of a preferred embodiment of the present invention.Please be simultaneously with reference to Fig. 4, it illustrates according to view on the single picture element of the semi-penetrate inverse liquid crystal display component of a preferred embodiment of the present invention.Semi-penetrate inverse liquid crystal display component comprise plate structure 8 on the plate structure 7, one and be filled in plate structure 8 and following plate structure 7 between liquid crystal layer 90.Wherein, liquid crystal layer 90 has a plurality of liquid crystal molecules 91.Following plate structure 7 comprise an infrabasal plate 70, a plurality of scan signal wire (Scan Line, SL), a plurality of data signal line (Data Line, DL) with a plurality of thin film transistor (TFT)s (TFT).Data signal line and scan the signal linear system and intersect vertically with the form of array, and those scan signal wire and those data-signal linear systems define a plurality of picture elements zone.As shown in Figure 4, each picture element zone system to scanning signal wire and one of adjacent data signal line is defined, and has a thin film transistor (TFT) 78 in each picture element zone by one of adjacent.
In the single picture element of semi-penetrate inverse liquid crystal display component, picture element region can be divided into penetrating region 5 and echo area 6 according to the path of light.As shown in Figure 3, on the infrabasal plate 70 of following plate structure 7, cording has a through electrode 75 and a reflecting electrode 76, and penetrating region 5 and echo area 6 in the corresponding picture element of the position of through electrode 75 and reflecting electrode 76 difference.When practical application, can utilize a transparent conductive material such as tin indium oxide (Indium Tin Oxide, ITO), as through electrode 75 and reflecting electrode 76, one reflecting plate 72 is set between reflecting electrode 76 and infrabasal plate 70 again, enters the incident light 61 of echo area 6 with reflection.Perhaps, directly with a transparent ITO and a metal aluminium lamination as through electrode 75 and reflecting electrode 76.The present invention also seldom limits this.
Upper substrate 80 places then electrically form one first common electrode 82 and one second common electrode 84 independently, and first common electrode 82 is corresponding with the position of through electrode 75 and reflecting electrode 76 respectively with the position that second common electrode 84 forms.When desire drives display module, tie up to and apply different voltages in the same time in first common electrode 82 and second common electrode 84, make the liquid crystal molecule 91 of penetrating region 5 and echo area 6 produce different dump angle, with the phase delay of the reflected light 61 that penetrates light 51 and echo area 6 of compensation penetrating region 5.
In this preferred embodiment, make first common electrode 82 and second common electrode 84 electrically independently mode be between form one at interval (Spacing) 86 to reach electrical isolation.Because near the liquid crystal molecule 91 arrangement situations at 86 places can be more in disorder at interval, and for penetrating region 5, arrange in disorder a little liquid crystal molecule 91 all can penetrating of light to be impacted, therefore the position at interval 86 is preferably corresponding to reflecting electrode 76 places.
According to the pixel electrode structure of the invention described above preferred embodiment, carry out the experiment of penetrance and contrast, experimental result is as follows.
Please refer to Fig. 5, it is the synoptic diagram according to the penetrance curve of penetrating region and echo area in the semi-penetrate inverse liquid crystal display component of a preferred embodiment of the present invention.Fig. 5 is that first common electrode 82 with penetrating region 5 remains on 0V, and second common electrode 84 of echo area 6 remains on 0.5V, resulting result.The result shows that the penetrance curve (triangle point curve) of penetrance curve of penetrating region (Diamond spot curve) and echo area almost overlaps.Therefore, use the pixel electrode structure of preferred embodiment of the present invention, can improve reflectivity really, improve optical efficiency.
Please refer to Fig. 6 A, 6B, be respectively the reflection contrast visual angle figure of the semi-penetrate inverse liquid crystal display component of electrode structure with preferred embodiment of the present invention and traditional electrode structure.Traditional semi-penetrate inverse liquid crystal display component has single common electrode (as shown in Figure 1), center contrast=150.The semi-penetrate inverse liquid crystal display component of preferred embodiment of the present invention has electrically independently two common electrodes, center contrast=550.Both contrast equal pitch contours relatively can be found out that heavy common electrode can improve maximum contrast and center really more than use is shown in preferred embodiment of the present invention to contrast.
The pixel electrode structure that is disclosed in the above-described embodiments, when being applied in semi-penetrate inverse liquid crystal display component, not only can promote the contrast and the reflectivity of semi-penetrate inverse liquid crystal display component, wherein electrically independently the formation method of multiple common electrode is simple and easy, do not need loaded down with trivial details processing procedure, therefore the method with tradition manufacturing double gap compares, and the present invention can improve process rate, reduces production costs.
In sum; though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the invention; when can doing various changes and retouching, so the present invention's protection domain attached claim person of defining after looking is as the criterion.
Claims (11)
1. a pixel electrode structure is applied to a semi-penetrate inverse liquid crystal display component, and this pixel electrode structure comprises:
One through electrode and a reflecting electrode are formed at an infrabasal plate place;
One first common electrode and one second common electrode are electrically to be formed at a upper substrate place independently, and this first common electrode is corresponding with the position of this through electrode and this reflecting electrode respectively with this second common electrode.
2. pixel electrode structure according to claim 1 is characterized in that, this first common electrode and this second common electrode system are respectively a transparent tin indium oxide.
3. pixel electrode structure according to claim 1 is characterized in that, this through electrode and this reflecting electrode are respectively a transparent tin indium oxide and an aluminium lamination.
4. pixel electrode structure according to claim 1 is characterized in that, has one between this first common electrode and this second common electrode at interval.
5. pixel electrode structure according to claim 4 is characterized in that, this position system at interval is corresponding to this reflecting electrode place.
6. semi-penetrate inverse liquid crystal display component comprises at least:
Plate structure once comprises:
One infrabasal plate;
A plurality of signal wire and a plurality of data signal lines of scanning, system intersects vertically with the form of array, and those scan signal wire and those data-signal linear systems define a plurality of picture elements zone, each picture element zone is a pair ofly to scan signal wire and adjacent a pair of data signal line is defined by adjacent, and have a through electrode and a reflecting electrode in each picture element zone, this through electrode and this reflecting electrode system are formed on this infrabasal plate; And
A plurality of thin film transistor (TFT)s, and have a thin film transistor (TFT) in each picture element zone;
Plate structure on one comprises:
One upper substrate;
One first common electrode and one second common electrode electrically are formed on this upper substrate independently, and this first common electrode is corresponding with the position of this through electrode and this reflecting electrode respectively with this second common electrode; And
One liquid crystal layer has a plurality of liquid crystal molecules and is filled on this between the plate structure and this time plate structure.
7. display module according to claim 6 is characterized in that, this first common electrode and this second common electrode system are respectively a transparent tin indium oxide.
8. display module according to claim 6 is characterized in that, this through electrode and this reflecting electrode are respectively a transparent tin indium oxide and an aluminium lamination.
9. display module according to claim 6 is characterized in that, when desire drives this display module, applies different voltages in this first common electrode and this second common electrode.
10. display module according to claim 6 is characterized in that, has one between this first common electrode and this second common electrode at interval.
11. display module according to claim 10 is characterized in that, this position system at interval is corresponding to this reflecting electrode place.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510009171 CN1645230A (en) | 2005-02-01 | 2005-02-01 | Semi-penetrating and semi-reflecting liquid crystal assembly, and pixel electrode structure thereof |
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| CN 200510009171 CN1645230A (en) | 2005-02-01 | 2005-02-01 | Semi-penetrating and semi-reflecting liquid crystal assembly, and pixel electrode structure thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462820C (en) * | 2006-06-13 | 2009-02-18 | 友达光电股份有限公司 | Liquid crystal display panel |
| CN103278975A (en) * | 2013-05-27 | 2013-09-04 | 京东方科技集团股份有限公司 | Semi-transmission semi-reflection liquid crystal display panel, array substrate, colorized film substrate and manufacturing method |
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2005
- 2005-02-01 CN CN 200510009171 patent/CN1645230A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462820C (en) * | 2006-06-13 | 2009-02-18 | 友达光电股份有限公司 | Liquid crystal display panel |
| CN103278975A (en) * | 2013-05-27 | 2013-09-04 | 京东方科技集团股份有限公司 | Semi-transmission semi-reflection liquid crystal display panel, array substrate, colorized film substrate and manufacturing method |
| CN103278975B (en) * | 2013-05-27 | 2016-04-06 | 京东方科技集团股份有限公司 | Transflective liquid crystal panel, array base palte, color membrane substrates and method for making |
| US9513506B2 (en) | 2013-05-27 | 2016-12-06 | Boe Technology Group Co., Ltd. | Transflective liquid crystal panel, display device, array substrate, color filter substrate and fabricating method thereof |
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