CN1310069C - Pixels of a transflective LCD panel - Google Patents
Pixels of a transflective LCD panel Download PDFInfo
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- CN1310069C CN1310069C CNB2003101135879A CN200310113587A CN1310069C CN 1310069 C CN1310069 C CN 1310069C CN B2003101135879 A CNB2003101135879 A CN B2003101135879A CN 200310113587 A CN200310113587 A CN 200310113587A CN 1310069 C CN1310069 C CN 1310069C
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- 230000005684 electric field Effects 0.000 claims abstract description 25
- 239000004988 Nematic liquid crystal Substances 0.000 claims abstract description 13
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- 239000010408 film Substances 0.000 description 77
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Abstract
A transflective liquid crystal display panel pixel includes an upper substrate and a lower substrate. The upper surface of the lower substrate can be divided into a reflection region covered with a reflection layer and a transmission region. The mixed nematic liquid crystal molecular layer is sandwiched between the upper and lower substrates. The first pixel electrode and the first common electrode are formed on the reflective region at a first predetermined distance to generate a transverse electric field to drive the liquid crystal molecules to turn. The second pixel electrode and the second common electrode are formed on the transmission region at a second predetermined distance to generate a transverse electric field to drive the liquid crystal molecules to turn. And the first predetermined distance is greater than the second predetermined distance. Therefore, when an operating voltage is input to the pixel, the phase delay generated by the liquid crystal molecular layer on the reflecting area is smaller than that on the penetrating area.
Description
Technical field
The present invention relates to the pixel of a kind of pixel of display panels, particularly a kind of half-penetration reflecting type liquid crystal display panel.
Background technology
Along with the thin film transistor (TFT) manufacturing technology is progressive fast, advantages such as LCD is frivolous owing to having possessed, power saving, no width of cloth ray, and a large amount of being applied in the various electronic products such as personal digital aid (PDA), mobile computer, digital camera, Video Camera, mobile phone.Yet, because LCD is a non-self luminous display, therefore, traditionally, be with a cold cathode fluorescent lamp as backlight, optical films such as the light penetration diffusion barrier that is produced, polaroid, form a uniform in-plane light and inject display panels, use and present image.
Generally speaking, the light that backlight produced only has less than 10% and can pass display panels and be applied in the demonstration, and remaining luminous energy all is absorbed in the process that penetrates optical film and display panels.In order to address the above problem, reflective liquid-crystal display is developed.Reflective liquid-crystal display is to utilize ambient light to replace the function of backlight, thereby does not need device cold cathode fluorescent lamp and relevant optical film among display.By this, except saving the energy consumption of display, more can reduce the dimension and weight of display.Yet dark partially when surrounding environment, reflective liquid-crystal display can't obtain enough ambient lights, will cause display effect to be had a greatly reduced quality.
In order to overcome the problems referred to above, the half-penetrating reflective LCD is developed.The half-penetrating reflective LCD can be according to demand simultaneously with the function of penetration and reflective liquid-crystal display, and environment for use light or backlight are as illumination.Therefore, when the ambient light abundance, can select environment for use light to think illumination, to save energy.When the ambient light deficiency, can select to use backlight to think illumination, to obtain desirable display effect.
Please refer to Fig. 1, show (Normal Black, NB) pixel of half-penetrating reflective LCD at the bottom of the typical black.Comprise a upper substrate 100, an infrabasal plate 300 and clamping layer of liquid crystal molecule 200 in upper and lower base plate 100 and 300.Upper substrate 100 has a glass baseplate 108 and is main body, and the upper surface of this glass baseplate 108 is manufactured with the quarter-wave plate 106 and first light polarizing film 104 in regular turn, and its lower surface is manufactured with a chromatic filter layer 102 and common electrode 110 in regular turn.Infrabasal plate has a glass baseplate 308 and is main body, the lower surface of this glass baseplate 308 is manufactured with the quarter-wave plate 306 and second light polarizing film 304 in regular turn, and its upper surface is manufactured with a reflecting plate 314, uses and divides into an echo area and a penetrating region that is coated with reflecting plate 314.In addition, a pixel electrode 310 is to be made on echo area and the penetrating region, and covers reflecting plate 314.Drive liquid crystal molecule by the potential difference (PD) of 310 of common electrode 110 and pixel electrodes and rotate, to reach the purpose of demonstration.
Please refer to Fig. 2 A and Fig. 2 B, the half-penetration reflecting type liquid crystal display panel in the displayed map 1 is not feeding under the situation of operating voltage the synoptic diagram of its running.Shown in Fig. 2 A, in the echo area, ambient light A at first penetrates first light polarizing film 104 and forms linearly polarized light A1, subsequently, penetrate quarter-wave plate 106, because main shaft (principal axes) direction of this quarter-wave plate 106 and penetrating shaft (transmission axis) direction of first light polarizing film accompany miter angle, therefore, this linearly polarized light A1 forms a circularly polarized light A2 and passes this quarter-wave plate 106.Do not feeding under the situation of operating voltage, layer of liquid crystal molecule (not icon) can't exert an influence to this circularly polarized light A2, and therefore, this circularly polarized light A2 still with the form of circularly polarized light, injects quarter-wave plate 106 after reflecting plate 314 reflections.Subsequently, form linearly polarized light A3 and pass this quarter-wave plate 106.It should be noted that, the electric field polarization direction of linearly polarized light A3 is vertical mutually with the electric field polarization direction of linearly polarized light A1, that is vertical mutually with the penetrating shaft direction of first light polarizing film 104, therefore, linearly polarized light A3 can't pass first light polarizing film 104 and reflect display panel.
Shown in Fig. 2 B, in penetrating region, B backlight at first penetrates second light polarizing film 304 and forms linearly polarized light B1, subsequently, penetrate quarter-wave plate 306 in regular turn, layer of liquid crystal molecule (not icon) and quarter-wave plate 106, owing to do not feeding under the situation of operating voltage, liquid crystal molecule can't exert an influence to this linearly polarized light B1, and, quarter-wave plate 306 is vertical mutually with fast axle (fast axis) direction of 106, phase delay (retardation) effect that causes linearly polarized light B1 is produced is to cancel out each other, and is passing the linearly polarized light B2 of quarter-wave plate 106, and its polarization direction is identical with linearly polarized light B1.In addition, because first light polarizing film 104 is vertical mutually with the penetrating shaft direction of second light polarizing film 304, therefore, above-mentioned linearly polarized light B2 can't pass first light polarizing film 104 and penetrate display panel.
Please refer to Fig. 3 A and Fig. 3 B, the half-penetration reflecting type liquid crystal display panel in the displayed map 1, under the situation that feeds operating voltage, the synoptic diagram of its running.As shown in Figure 3A, in the echo area, ambient light A at first penetrates first light polarizing film 104 and forms linearly polarized light A4, subsequently, penetrate quarter-wave plate 106, because the major axes orientation of this quarter-wave plate 106 and the penetrating shaft direction of first light polarizing film 104 accompany miter angle, therefore, this linearly polarized light A4 forms a circularly polarized light A5 and passes this quarter-wave plate 106.This circularly polarized light A5 penetrates layer of liquid crystal molecule 200 in regular turn, after reflecting plate 314 reflections, penetrates this layer of liquid crystal molecule 200 once more.Under the situation that the best reflection shows,, above-mentioned layer of liquid crystal molecule 200 is produced be equivalent to quarter-wave phase delay effect by adjusting suitable operating voltage level and thickness of liquid crystal layer.Add the effect of reflection, pass layer of liquid crystal molecule 200 and form the circularly polarized light A6 identical with circularly polarized light A5 polarization direction.Subsequently, this circularly polarized light A6 forms linearly polarized light A7 and passes quarter-wave plate 106.Polarization direction that it should be noted that this linearly polarized light A7 is identical with the penetrating shaft direction of first light polarizing film 104, therefore, can avoid linearly polarized light A7 to be covered by first light polarizing film 104, to obtain the reflection display effect of top efficiency.
Shown in Fig. 3 B, in penetrating region, B backlight at first penetrates second light polarizing film 304 and forms linearly polarized light B3, subsequently, penetrates quarter-wave plate 306, layer of liquid crystal molecule 200 and quarter-wave plate 106 in regular turn.Under the situation that optimal penetration shows,, make above-mentioned layer of liquid crystal molecule 200 produce the phase delay that is equivalent to 1/2nd wavelength by adjusting suitable operating voltage level.Thereby making the linearly polarized light B4 that passes quarter-wave plate 106, its polarization direction and linearly polarized light B3 are orthogonal.In addition,, can avoid linearly polarized light B4 to be covered, to obtain the display effect that penetrates of top efficiency by first light polarizing film 104 because first light polarizing film 104 is vertical mutually with the penetrating shaft direction of second light polarizing film 304.
Generally speaking, please refer to Fig. 1, in the echo area and penetrating region of typical half-penetration reflecting type liquid crystal display panel, pixel electrode 310 is roughly the same with the distance of common electrode 110.Be also roughly the same in the electric field intensity that echo area and penetrating region are produced with operating voltage.Yet, as mentioned above, under the situation that the best reflection shows, layer of liquid crystal molecule 200 must produce and be equivalent to quarter-wave phase delay effect, and under the situation that optimal penetration shows, layer of liquid crystal molecule 200 must produce the phase delay effect that is equivalent to 1/2nd wavelength.Therefore, can't meet best reflection simultaneously and show the requirement that shows with optimal penetration, and must between the two, obtain compromise.
In view of this, the present invention proposes a kind of pixel of half-penetrating reflective LCD, by providing different electric field intensity in the echo area with penetrating region, shows the requirement that shows with optimal penetration to meet above-mentioned best reflection simultaneously.
Summary of the invention
The objective of the invention is by the electric field intensity that changes echo area and penetrating region, make layer of liquid crystal molecule produce different phase delay with penetrating region, use the display effect of improving the half-penetrating reflective LCD in the echo area.
Above-mentioned purpose of the present invention is realized by following technical scheme.
A kind of pixel of half-penetration reflecting type liquid crystal display panel comprises: a upper substrate;
One infrabasal plate is made in the below of this upper substrate, and the upper surface region of this infrabasal plate is divided into an echo area and a penetrating region that is coated with the reflection horizon; It is characterized in that:
One blendes together the nematic crystal molecular layer, is that clamping is between this upper and lower base plate;
One first pixel electrode and one first common electrode are to be made on this echo area, and one first preset distance produces transverse electric field and turns to drive liquid crystal molecule at interval;
One second pixel electrode and one second common electrode are to be made on this penetrating region, and one second preset distance produce transverse electric field and turn to drive liquid crystal molecule, and this first preset distance is greater than this second preset distance at interval;
When an operating voltage is imported this pixel, the phase delay that produces at this layer of liquid crystal molecule on this echo area is less than this layer of liquid crystal molecule on this penetrating region.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: before this operating voltage of input, this blendes together the nematic liquid crystal molecules layer and presets quarter-wave phase delay, to have the function of quarter-wave plate.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with first alignment film, and the upper surface of this infrabasal plate is manufactured with second alignment film, and, the tilt angle that this second alignment film is had is the tilt angle greater than this first alignment film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with first alignment film, and the upper surface of this infrabasal plate is manufactured with second alignment film, and, the tilt angle that this second alignment film is had is the tilt angle less than this first alignment film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with horizontal alignment film, the upper surface of this infrabasal plate is manufactured with the vertical orientation film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with the vertical orientation film, the upper surface of this infrabasal plate is manufactured with horizontal alignment film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: this infrabasal plate comprises that the quarter-wave plate is made in a glass baseplate lower surface.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: this upper substrate comprises first light polarizing film, this first light polarizing film is made in a glass baseplate upper surface, this infrabasal plate comprises the quarter-wave plate and second light polarizing film, this quarter-wave plate and this second light polarizing film from top to bottom are made in a glass baseplate lower surface, and the polarization direction of this first light polarizing film and this second light polarizing film is orthogonal.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: this upper substrate comprises that 1/2nd ripple plates are made under this first light polarizing film, and this infrabasal plate comprises that 1/2nd ripple plates are made on this second light polarizing film.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: this two pixel electrode and this two common electrode all are material with the indium tin oxide.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: this two pixel electrode and this two common electrode all are elongated projections and are made on this infrabasal plate.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: be the half-penetrating reflective LCD that is applied to black matrix.
A kind of pixel of half-penetration reflecting type liquid crystal display panel comprises:
One upper substrate comprises that first light polarizing film is made in the upper surface of this upper substrate;
One infrabasal plate, be made in the below of this upper substrate, this infrabasal plate comprises that the quarter-wave plate and second light polarizing film from top to bottom are made in the lower surface of this infrabasal plate, and the upper surface of this infrabasal plate can be divided into an echo area and a penetrating region that is coated with the reflection horizon; It is characterized in that:
One blendes together the nematic crystal molecular layer, be clamping between this upper and lower base plate, and present and be equivalent to quarter-wave phase delay;
One first pixel electrode and one first common electrode are to be elongated projections to be made on this echo area, and one first preset distance produces transverse electric field and turns to drive liquid crystal molecule at interval;
One second pixel electrode and one second common electrode are to be elongated projections to be made on this penetrating region, and one second preset distance produce transverse electric field and turn to drive liquid crystal molecule, and this first preset distance is greater than this second preset distance at interval;
When an operating voltage is imported this pixel, the phase delay effect of this layer of liquid crystal molecule on this echo area increases to 1/2nd wavelength by quarter-wave, and the phase delay effect of this layer of liquid crystal molecule on this penetrating region increases to four/three-wavelength by quarter-wave, to reach maximum display brightness.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with first alignment film, and the upper surface of this infrabasal plate is manufactured with second alignment film, and, the tilt angle that this second alignment film is had is the tilt angle greater than this first alignment film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with first alignment film, and the upper surface of this infrabasal plate is manufactured with second alignment film, and, the tilt angle that this second alignment film is had is the tilt angle less than this first alignment film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with horizontal alignment film, the upper surface of this infrabasal plate is manufactured with the vertical orientation film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel, it is characterized in that: the lower surface of this upper substrate is manufactured with the vertical orientation film, the upper surface of this infrabasal plate is manufactured with horizontal alignment film, uses the nematic crystal molecule that makes between this upper and lower base plate and is and blendes together shape and arrange.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: this upper substrate comprises that 1/2nd ripple plates are made under this first light polarizing film, and this infrabasal plate comprises that 1/2nd ripple plates are made on this second light polarizing film.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: this two pixel electrode and this two common electrode all are material with the indium tin oxide.
The pixel of described half-penetration reflecting type liquid crystal display panel is characterized in that: be the half-penetrating reflective LCD that is applied to black matrix.
Half-penetration reflecting type liquid crystal display panel pixel of the present invention comprises a upper substrate and an infrabasal plate, and the upper surface region of infrabasal plate is divided into an echo area and a penetrating region that is coated with the reflection horizon.One to blend together the nematic crystal molecular layer be that clamping is between upper and lower base plate.First pixel electrode and first common electrode are to be made on the echo area, and first preset distance is used the generation transverse electric field at interval, turn to drive liquid crystal molecule.And second pixel electrode and second common electrode are to be made on this penetrating region, and second preset distance is used the generation transverse electric field and turned to drive liquid crystal molecule at interval.And above-mentioned first preset distance is greater than second preset distance, and therefore, when an operating voltage is imported this pixel, the phase delay effect that produces at layer of liquid crystal molecule on the echo area is less than the layer of liquid crystal molecule on penetrating region.
Compared to traditional half-penetrating reflective LCD, the present invention has following advantage:
1, in the pixel of half-penetrating reflective LCD of the present invention, by the size of adjusting above-mentioned first preset distance and second preset distance, can be at the transverse electric field E1 and the E2 of echo area and penetrating region generation varying strength.Use make echo area and penetrating region blend together the nematic crystal molecular layer, produce the phase delays of different sizes, show the demand that shows with optimal penetration to meet best reflection respectively.
2, be not connected with under the situation of operating voltage, the nematic crystal molecular layer that blendes together of the present invention is to preset to be equivalent to quarter-wave phase delay.Therefore, compared to the traditional half-penetrating reflective LCD of Fig. 1, half-penetrating reflective LCD of the present invention has been saved the quarter-wave plate.
3, the nematic crystal molecular layer that blendes together used in the present invention has the employed super-twist nematic layer of liquid crystal molecule of more traditional half-penetrating reflective LCD reaction velocity faster, therefore, can improve the display effect of LCD.
Can be further understood by following embodiment detailed description in conjunction with the accompanying drawings about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 is the synoptic diagram of half-penetrating reflective liquid crystal display pixel at the bottom of the typical black.
Fig. 2 A and Fig. 2 B are not feeding under the situation of operating voltage, the synoptic diagram of a typical half-penetration reflecting type liquid crystal display panel running.
Fig. 3 A and Fig. 3 B are being connected with under the situation of operating voltage, the synoptic diagram of a typical half-penetration reflecting type liquid crystal display panel running.
Fig. 4 is the synoptic diagram of half-penetrating reflective liquid crystal display pixel one preferred embodiment of the present invention.
Fig. 5 A and Fig. 5 B are not feeding under the situation of operating voltage, the synoptic diagram of half-penetration reflecting type liquid crystal display panel running of the present invention.
Fig. 6 A and Fig. 6 B are being connected with under the situation of operating voltage, the synoptic diagram of half-penetration reflecting type liquid crystal display panel running of the present invention.
Embodiment
Please refer to Fig. 4, show pixel one preferred embodiment of half-penetrating reflective LCD of the present invention.This pixel comprises a upper substrate 100, an infrabasal plate 300 and clamping nematic (Nematic) layer of liquid crystal molecule 400 in upper and lower base plate 100 and 300.Upper substrate 100 has a glass baseplate 108 and is main body, and the upper surface of this glass baseplate 108 is manufactured with light polarizing film 104, and its lower surface is manufactured with a chromatic filter layer 102 and first alignment film 120 in regular turn.First alignment film 120 provides the effect of liquid crystal alignment, makes long axis of liquid crystal molecule and surface level accompany the first tilt angle a.Infrabasal plate 300 has a glass baseplate 308 and is main body, the lower surface of this glass baseplate 308 is manufactured with the quarter-wave plate 306 and second light polarizing film 304 in regular turn, and its upper surface is manufactured with a reflecting plate 314, uses upper surface region with infrabasal plate 300 and is divided into an echo area and a penetrating region that is coated with reflecting plate 314.In addition, one second alignment film 320 is to be made on echo area and the penetrating region, and covers reflecting plate 314, and makes long axis of liquid crystal molecule and surface level accompany the second tilt angle b of wide-angle.
The above-mentioned second tilt angle b is near vertical, and so that the effect of layer of liquid crystal molecule 400 1 vertical orientations to be provided, and the first tilt angle a is near level, so that the effect of layer of liquid crystal molecule 400 horizontal orientations to be provided.Therefore, liquid crystal molecule is between first alignment film 120 and second alignment film 320, and its long axis direction transfers capwise to by horizontal trend gradually, blendes together (hybrid) arrangement and present.By this, between above-mentioned two pixel electrodes 402,406 and two common electrodes 404,408, the transverse electric field E1 and the E2 that are produced can drive liquid crystal molecule and transfer horizontal trend to, to reach the purpose of demonstration.
With regard to a preferred embodiment, above-mentioned two pixel electrodes 402,406 and two common electrodes 404,408 can be grown up strip projected parts on infrabasal plate 300, and a uniform transverse electric field is provided.In addition, by suitably adjust upper and lower base plate 100 and 300 apart from t, and the size of the above-mentioned first tilt angle a and the second tilt angle b, do not feeding under the situation of operating voltage, blend together in nematic (Hybrid Nematic) layer of liquid crystal molecule 400 at this, preset and be equivalent to quarter-wave phase delay effect.And, by the size of adjusting above-mentioned first predetermined distance d 1 and second predetermined distance d 2, make under the situation that feeds operating voltage, layer of liquid crystal molecule 400 in the echo area produces the phase delay effect that is equivalent to 1/2nd wavelength, simultaneously, the layer of liquid crystal molecule 400 at penetrating region produces the phase delay effect that is equivalent to four/three-wavelength.
Please refer to Fig. 5 A and Fig. 5 B, show the invention described above half-penetration reflecting type liquid crystal display panel, do not feeding under the situation of operating voltage the synoptic diagram of its running.Shown in Fig. 5 A, in the echo area, ambient light C at first penetrates first light polarizing film 104 and forms linearly polarized light C1, and subsequently, this linearly polarized light C1 penetrates layer of liquid crystal molecule 400, after reflecting plate 314 reflections, penetrates this layer of liquid crystal molecule 400 once again.As mentioned above, owing to presetting, this layer of liquid crystal molecule 400 is equivalent to quarter-wave phase delay effect.Therefore, layer of liquid crystal molecule 400 provides the phase delay that is equivalent to 1/2nd wavelength effect altogether, make linearly polarized light C1 change linearly polarized light C2 into and pass this layer of liquid crystal molecule 400, and the electric field polarization direction of linearly polarized light C2 is perpendicular to linearly polarized light C1.Therefore, linearly polarized light C2 can't pass first light polarizing film 104 and reflect display panel.
Shown in Fig. 5 B, in penetrating region, D backlight at first penetrates second light polarizing film 304 and forms linearly polarized light D1, subsequently, penetrates quarter-wave plate 306 and layer of liquid crystal molecule 400 in regular turn.This quarter-wave plate 306 is vertical mutually with the quick shaft direction of layer of liquid crystal molecule 400, and therefore, the phase delay effect that linearly polarized light D1 is produced is to cancel out each other.Be passing the linearly polarized light D2 of layer of liquid crystal molecule 400, its polarization direction is identical with linearly polarized light D1.In addition, because first light polarizing film 104 is vertical mutually with the penetrating shaft direction of second light polarizing film 304, therefore, above-mentioned linearly polarized light D2 can't pass first light polarizing film 104 and penetrate display panel.
Please refer to Fig. 6 A and Fig. 6 B, the half-penetration reflecting type liquid crystal display panel in the displayed map 4, under the situation that feeds operating voltage, the synoptic diagram of its running.As shown in Figure 6A, in the echo area, ambient light C at first penetrates first light polarizing film 104 and forms linearly polarized light C3, and subsequently, this linearly polarized light C3 penetrates layer of liquid crystal molecule 400, after reflecting plate 314 reflections, penetrates this layer of liquid crystal molecule 400 once again.Under the situation that the best reflection shows,, make above-mentioned layer of liquid crystal molecule 400 produce the phase delay effect that is equivalent to 1/2nd wavelength by adjusting suitable operating voltage level.Therefore, layer of liquid crystal molecule 400 provides the phase delay that is equivalent to wavelength effect altogether, makes linearly polarized light C3 form linearly polarized light C4 and passes this layer of liquid crystal molecule 400.Polarization direction that it should be noted that this linearly polarized light C4 is identical with the penetrating shaft direction of first light polarizing film 104, therefore, can avoid linearly polarized light C4 to be covered by first light polarizing film 104, to obtain the reflection display effect of top efficiency.
Shown in Fig. 6 B, in penetrating region, D backlight at first penetrates second light polarizing film 304 and forms linearly polarized light D3, subsequently, penetrate quarter-wave plate 306, because the major axes orientation of this quarter-wave plate 306 and the penetrating shaft direction of second light polarizing film accompany miter angle, therefore, this linearly polarized light D3 forms a circularly polarized light D4 and passes this quarter-wave plate 306 and penetrate layer of liquid crystal molecule 400.Under the situation that optimal penetration shows,, make above-mentioned layer of liquid crystal molecule 400 produce the phase delay effect that is equivalent to four/three-wavelength by adjusting suitable operating voltage level.Therefore, this circularly polarized light D4 changes a linearly polarized light D5 into and passes this layer of liquid crystal molecule 400.It should be noted that the quick shaft direction that to select quarter-wave plate 306 and layer of liquid crystal molecule 400, the layer of liquid crystal molecule 400 and the phase delay effect of quarter-wave plate 306 are cancelled out each other, use making linearly polarized light D5 perpendicular to linearly polarized light D3.Because first light polarizing film 104 is vertical mutually with the penetrating shaft direction of second light polarizing film 304, therefore, can avoid linearly polarized light D5 to be covered by first light polarizing film 104, to obtain the display effect that penetrates of top efficiency.
The above is to utilize preferred embodiment to describe the present invention in detail, but not limit the scope of the invention, and know this type of skill personage and all can understand, suitably do slightly change and adjustment, will not lose main idea of the present invention place, also not break away from the spirit and scope of the present invention.
Claims (20)
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| CNB2003101135879A CN1310069C (en) | 2003-11-14 | 2003-11-14 | Pixels of a transflective LCD panel |
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| CNB2003101135879A CN1310069C (en) | 2003-11-14 | 2003-11-14 | Pixels of a transflective LCD panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4476137B2 (en) | 2005-02-28 | 2010-06-09 | セイコーエプソン株式会社 | Liquid crystal device and electronic device |
| JP4111203B2 (en) * | 2005-03-28 | 2008-07-02 | エプソンイメージングデバイス株式会社 | Liquid crystal device and electronic device |
| US7379138B2 (en) * | 2005-06-09 | 2008-05-27 | Au Optronics Corporation | Transflective liquid crystal display having first and second voltage potentials selected to achieve predetermined polarization states for light encountering respectively the transmissive and reflective areas |
| JP4434166B2 (en) * | 2005-06-09 | 2010-03-17 | エプソンイメージングデバイス株式会社 | Liquid crystal device and electronic device |
| TWI311661B (en) | 2005-08-23 | 2009-07-01 | Au Optronics Corporatio | A liquid crystal display and a method for manufacturing thereof |
| CN100437254C (en) * | 2005-09-12 | 2008-11-26 | 友达光电股份有限公司 | Liquid crystal display panel and method for manufacturing the same |
| WO2007129420A1 (en) | 2006-04-24 | 2007-11-15 | Sharp Kabushiki Kaisha | Display device |
| JP4968675B2 (en) * | 2007-04-02 | 2012-07-04 | Ｎｌｔテクノロジー株式会社 | Transflective liquid crystal display device |
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| JP2003248238A (en) * | 2003-03-07 | 2003-09-05 | Matsushita Electric Ind Co Ltd | Active matrix type liquid crystal display |
| US20030202140A1 (en) * | 2002-04-24 | 2003-10-30 | Hong-Da Liu | Scattering fringe field optical-compensated reflective and transflective liquid crystal display |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030202140A1 (en) * | 2002-04-24 | 2003-10-30 | Hong-Da Liu | Scattering fringe field optical-compensated reflective and transflective liquid crystal display |
| JP2003248238A (en) * | 2003-03-07 | 2003-09-05 | Matsushita Electric Ind Co Ltd | Active matrix type liquid crystal display |
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