CN101576685B - Liquid crystal display panel and liquid crystal display device comprising same - Google Patents
Liquid crystal display panel and liquid crystal display device comprising same Download PDFInfo
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- CN101576685B CN101576685B CN 200810095370 CN200810095370A CN101576685B CN 101576685 B CN101576685 B CN 101576685B CN 200810095370 CN200810095370 CN 200810095370 CN 200810095370 A CN200810095370 A CN 200810095370A CN 101576685 B CN101576685 B CN 101576685B
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Abstract
The invention provides a liquid crystal display panel and a liquid crystal display device comprising the same. The liquid crystal display panel at least comprises a first basal plate, a second basal plate, a liquid crystal layer, a first polarizing plate, a phase delay piece and a second polarizing plate, wherein the second polarizing plate, the second basal plate, the liquid crystal layer, the phase delay piece, the first basal plate and the first polarizing plate are piled in sequence, and the liquid crystal display panel is provided with a penetration area and a reflection area. The liquid crystal display panel can be applied in the liquid crystal display device.
Description
Technical field
The present invention relates to a kind of display panels and comprise its liquid crystal indicator, more especially, relate to a kind of semi-penetrating and semi-reflective liquid crystal display panel and comprise its liquid crystal indicator.
Background technology
Along with information, communications industry are constantly weeded out the old and bring forth the new, (Liquid Crystal Display, LCD) market is flourish to have driven LCD.LCD has that high image quality, volume are little, in light weight, low driving voltage, with advantage such as low consumpting power, therefore be widely used in personal digital assistant (Personal Digital Assistant, PDA), mobile phone, shoot with video-corder projector, mobile computer, desktop display, automobile-used display, and consumer communication or electronic product such as projection TV.(these consumer communications or electronic product are also towards light, thin, short, little trend development for Integrated Circuit, IC) advancing by leaps and bounds of industry and LCD manufacturing technology to add integrated circuit.Especially aspect computer product, except high-performance, high-speed desktop PC, mobile computer easy to carry is subjected to paying close attention to greatly and paying attention to especially.
In the development of LCD, be to be the development main shaft with the penetrating LCD at the beginning.The LCD of general penetration is built in the back side of display in its light source, be called backlight (Back Light).So the material of its pixel electrode (Pixel Electrode) must use transparent conductive material, that is tin indium oxide (Indium Tin Oxide, ITO).The employed backlight of penetrating LCD is the maximum assembly of its power consumption in fact, and the field of general LCD widespread use is portable computer and communication product, and using needs battery to supply electric energy often.Therefore how to reduce the power consumption of LCD, become an important research direction.
Therefore reflective LCD arises at the historic moment, and its light source is to utilize external lamp or artificial light source.So the material of pixel electrode must use the conductive material that can reflect external light, generally is to use metallic aluminium.And reflective LCD be in order to reach reflecting effect preferably, and the surface of show electrode is rough.So white light by liquid crystal (Liquid Crystal, LC) during layer, the light path length difference of diverse location, the gait of march of light in the LC layer of adding different frequency is also inconsistent.So, make white light by after the LC layer, produce painted phenomenon, influence the color of image.Be respectively to dispose one deck alignment film in the upper and lower plates inboard of LCD at present, with the orientation of control liquid crystal molecule, solve white light by painted problem after the LC layer.But, reflected displaying device is difficult is issued to height to the requirement of the image of high color quality, especially full-colorization when at high-res.When external light source luminance shortage, contrast and the brightness of reflected displaying device receive discount greatly, therefore if can cooperate the penetration technology of auxiliary backlight to make semi-penetration semi-reflective (Transflective) display, it can have penetration and reflective advantage simultaneously, be applicable to amorphous silicon film transistor (a-Si TFT) or low-temperature polysilicon film transistor active Driving technique such as (Low Temperature Polysilicon TFT), therefore present low power consumption TA information product mostly adopts the semi-penetrating and semi-reflecting type display panel of this class.
Semi-penetrating and semi-reflecting type display panel can utilize the deficiency of back light system auxiliary environment light source.When environment light source was sufficient, semi-penetrating and semi-reflecting type display panel need not use built-in illuminating source, but took full advantage of environment light source and can dispense backlight, to reach the effect of power saving.
Please refer to Fig. 1, it illustrates a kind of structural representation of known semi-penetrating and semi-reflective liquid crystal display panel.Known semi-penetrating and semi-reflective liquid crystal display panel 900 includes upper substrate 910, infrabasal plate 920 and liquid crystal layer 930.Upper substrate 910 is parallel with infrabasal plate 920 and is oppositely arranged, and liquid crystal layer 930 is formed between upper substrate 910 and the infrabasal plate 920.On the inside surface of upper substrate 910, that is in the face of the surface of infrabasal plate 920 is provided with black-matrix layer 911 and common electrode layer 912, be embedded chromatic filter layer (not illustrating) in the black-matrix layer 911, both alignment layers 913 on the surface of common electrode layer 912 has.On the inside surface of infrabasal plate 920, that is in the face of on the surface of upper substrate 910, be to constitute the pixel region that matrix is arranged by many gate lines that intersect vertically and data line.Last phase delay chip 914 and last Polarizer 915 are arranged at the outer surface of upper substrate 910 in regular turn.Following phase delay chip 924 and following Polarizer 925 are arranged at the outer surface of infrabasal plate 920 in regular turn.
Each pixel region is controlled by thin film transistor (TFT) TFT (not illustrating), and is divided into penetrating region 940 and echo area 950 at least.Pixel region comprises that transparent electrode layer 921 is positioned on the infrabasal plate 920, and protective seam 922 is positioned on the transparent electrode layer 921.Have reflecting electrode 923 on the protective seam 922 of echo area 950, following both alignment layers 926 is positioned on protective seam 922 and the reflecting electrode 923.Liquid crystal layer 930 is arranged between both alignment layers 913 and the following both alignment layers 926.
Wherein, last phase delay chip 914 and following phase delay chip 924 are quarter-wave lengthy motion picture (λ/4), and it is orthogonal with the polarization direction of following Polarizer 925 to go up Polarizer 915.
Yet when making known half-penetration half-reflection liquid crystal display panel 900, each optical structure layers all must accurately be located and assemble, to avoid influencing optical effect.Therefore, when the optical texture number of layers of display panels 900 the more the time, more increase manufacturing degree of difficulty and the manufacturing cost of display panels 900.And when reality is used display panels 900, only the light in penetrating region 940 can pass through phase delay chip 924 and following Polarizer 925 down, and the light in echo area 950 passes through phase delay chip 924 and following Polarizer 925 down, that is the light in echo area 950 need not phase delay chip 924 and following Polarizer 925 under the use.Therefore, the optical texture number of layers of known semi-penetrating and semi-reflective liquid crystal display panel 900 still has the space of improvement.
US20080100782A1 is immediate prior art file.
Summary of the invention
Therefore one aspect of the present invention liquid crystal indicator of being to provide a kind of display panels and comprising it by use single phase delay chip in semi-penetrating and semi-reflective liquid crystal display panel, can be simplified panel construction and manufacturing process.
The liquid crystal indicator that another aspect of the present invention is to provide a kind of display panels and comprises it is by forming the display panels of monospace, with simplified manufacturing technique.
According to embodiments of the invention, display panels of the present invention includes first substrate, second substrate, liquid crystal layer, pixel region, first Polarizer, phase delay chip and second Polarizer at least.First substrate is provided with common electrode layer, and second substrate is with respect to the first substrate setting, and wherein second substrate is provided with pixel electrode layer.Liquid crystal layer is arranged between first substrate and second substrate, and a plurality of pixel regions are made of common electrode layer, pixel electrode layer and liquid crystal layer, and wherein said pixel region has penetrating region and echo area.First Polarizer is arranged at a side of first substrate, and with respect to liquid crystal layer, phase delay chip is arranged between first substrate and first Polarizer, wherein phase delay chip has a plurality of delay zone and a plurality of reflection delay districts of penetrating, and the described delay zone that penetrates is corresponding to the penetrating region of described pixel region, and the optical axis direction in described reflection delay district is corresponding to the echo area of described pixel region.Second Polarizer is arranged on the side of second substrate, and with respect to liquid crystal layer.Wherein, in penetrating region, the penetrating shaft direction of the slow-axis direction of the liquid crystal molecule of liquid crystal layer, first Polarizer and the optical axis direction that penetrates delay zone of phase delay chip arrange mutually accordingly, and in the echo area, the optical axis direction in the penetrating shaft direction of the slow-axis direction of the liquid crystal molecule of liquid crystal layer, first Polarizer and the reflection delay district of phase delay chip arranges mutually accordingly, so that penetrating region has identical bright dark attitude performance with the echo area.
In addition, according to embodiments of the invention, above-mentioned display panels can be applicable in the liquid crystal indicator.
Therefore, display panels of the present invention and comprise that its display device can only use single phase delay chip, thereby can simplify panel construction and manufacturing process.And can select to form the display panels of monospace, with further simplified manufacturing technique.
Description of drawings
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of accompanying drawing:
Fig. 1 is the structural representation that illustrates a kind of known semi-penetrating and semi-reflective liquid crystal display panel.
Fig. 2 is the front schematic view that illustrates according to the liquid crystal indicator of first embodiment of the invention.
Fig. 3 is the diagrammatic cross-section that illustrates according to the display panels of first embodiment of the invention.
Fig. 4 A and 4B illustrate according to the penetrating region of the display panels of first embodiment of the invention and the structural representation of echo area.
Fig. 5 is the structural representation that illustrates according to the penetrating region of the display panels of second embodiment of the invention.
Fig. 6 A and 6B are the structural representations that illustrates according to the echo area of the display panels of third embodiment of the invention.
Fig. 7 is the structural representation that illustrates according to the echo area of the display panels of fourth embodiment of the invention.
Fig. 8 is the structural representation that illustrates according to the echo area of the display panels of fifth embodiment of the invention.
Main description of reference numerals
100: display panels
110,110a, 110b, 110c, 110d: first Polarizer
120: phase delay chip
121,121a: penetrate delay zone
122,122b, 122c, 122d: reflection delay district
132: 133: the first both alignment layers of common electrode layer
140,140a, 140b, 140c, 140d: liquid crystal layer
151a: through electrode 151b: reflecting electrode
160: the second Polarizers
170: pixel region 171: penetrating region
172: the echo area
200: module backlight
900: display panels 910: upper substrate
911: black-matrix layer 912: common electrode layer
913: go up both alignment layers 914: go up phase delay chip
915: go up Polarizer
920: infrabasal plate 921: transparent electrode layer
922: protective seam 923: reflecting electrode
924: following phase delay chip 925: following Polarizer
926: following both alignment layers
930: liquid crystal layer 940: penetrating region
950: the echo area
Embodiment
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, this instructions will be illustrated especially exemplified by going out some embodiment.But it should be noted that these embodiment just in order to embodiments of the present invention to be described, but not in order to limit the present invention.
Please refer to Fig. 2, it illustrates the front schematic view according to the liquid crystal indicator of first embodiment of the invention.The liquid crystal indicator of present embodiment includes display panels 100 and module backlight 200.Display panels 100 is arranged at module backlight 200 tops, in order to form semi-penetrating semi-reflecting type liquid crystal displaying device.This module 200 backlight can be side-light type (Edge Lighting) module backlight or straight-down negative light inlet (Bottom Lighting) module backlight, and module 200 preferable optical diaphragm group (not illustrating) that are provided with backlight wherein are to promote backlight efficiency and collimation.Optical diaphragm group for example can be: diffusion sheet, prismatic lens, inverse edge eyeglass (Turning Prism Sheet), brightness enhancement film (Brightness Enhancement Film, BEF), reflective brightness enhancement film (Dual Brightness Enhancement Film, DBEF), non-multilayer membrane type reflection Polarizer (Diffused Reflective Polarizer Film, DRPF) or the combination in any of above-mentioned rete.And the light source of module 200 backlight (not illustrating) for example is: cathode fluorescent tube (Cold Cathode Fluorescent Lamp, CCFL), hot-cathode fluorescent lamp (Hot Cathode Fluorescent Lamp, HCFL), light emitting diode (Light-Emitting Diode, LED), Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) or EL sheet (Electro-Luminescence, EL), in order to provide backlight to display panels 100.
Please refer to Fig. 3, for illustrating the diagrammatic cross-section according to the display panels of first embodiment of the invention.The display panels 100 of present embodiment includes first Polarizer 110, phase delay chip 120, first substrate 130, liquid crystal layer 140, second substrate 150, second Polarizer 160 and a plurality of pixel region 170.Liquid crystal layer 140 is arranged between first substrate 130 and second substrate 150, first Polarizer 110 is arranged at a side of first substrate 130, and with respect to liquid crystal layer 140, phase delay chip 120 is arranged between first Polarizer 110 and first substrate 130, second Polarizer 160 is arranged at a side of second substrate 150, and with respect to liquid crystal layer 140, these pixel regions 170 are formed between first substrate 130 and second substrate 150, wherein these pixel regions 170 each have penetrating region 171 and echo area 172, in order to allow light to pass through respectively and reflection ray.
As shown in Figure 3, the penetrating shaft direction of first Polarizer 110 of present embodiment is perpendicular to the penetrating shaft direction of second Polarizer 160.First substrate 130 is provided with black-matrix layer (Black Matrix) 131, common electrode layer 132 and first both alignment layers 133, and it is arranged at the opposite side (in the face of the direction of liquid crystal layer 140) of first substrate 130 in regular turn.Be embedded with the chromatic filter layer (not illustrating) of the colored photo anti-corrosion agent material formation with light transmission in the black-matrix layer 131, the material of black-matrix layer 131 for example is: metal (for example chromium), graphite or resin type material, thereby first substrate 130 can form colored filter substrate.Common electrode layer 132 is made by the material with electric conductivity and light transmission, for example: ITO, IZO, AZO, GZO, TCO or ZnO.
As shown in Figure 3, second substrate 150 of present embodiment is provided with pixel electrode layer 151, second both alignment layers 152 and many gate lines that intersect vertically and data line (not illustrating), thereby can form thin film transistor (TFT) (TFT) substrate, wherein pixel electrode layer 151 and second both alignment layers 152 are arranged at the opposite side (in the face of the direction of liquid crystal layer 140) of second substrate 150 in order.These pixel regions 170 of present embodiment are made of the pixel electrode layer 151 of common electrode layer 132, liquid crystal layer 140 and second substrate 150 of first substrate 130.Pixel electrode layer 151 is provided with a plurality of through electrode 151a and a plurality of reflecting electrode 151b, and it corresponds respectively to penetrating region 171 and the echo area 172 of pixel region 170.Through electrode 151a makes with transparent conductive material, for example: ITO, IZO, AZO, GZO, TCO or ZnO, to allow light penetration.Reflecting electrode 151b makes with the material of high reflectance, for example: metal materials such as Al, Ag, Cr, Mo, Ti or AlNd, in order to reflection ray.
It should be noted that, the thickness of the liquid crystal layer 140 of the penetrating region 171 of present embodiment can be same or different from the thickness of the liquid crystal layer 140 of echo area 172, that is penetrating region 171 can select to have gap of liquid crystal cell identical or inequality (Cell gap) with echo area 172, thereby can form the display panels 100 of the semi-penetration, semi-reflective of monospace or double space.
As shown in Figure 3, the phase delay chip 120 of present embodiment has a plurality of delay zone 121 and a plurality of reflection delay districts 122 of penetrating, these penetrate delay zone 121 each corresponding to each penetrating region 171 of these pixel regions 170, these reflection delay districts 122 each corresponding to each echo area 172 of these pixel regions 170, that is these optical axis directions that penetrate delay zone 121 can be same as or be different from the optical axis direction in these reflection delay districts 122, so that the penetrating region 171 of pixel region 170 can have consistent bright dark attitude performance and light phase with echo area 172.Penetrate delay zone 121 and reflection delay district 122 and can be respectively quarter-wave lengthy motion picture (λ/4), half-wave plate (λ/2), all-wave lengthy motion picture (λ), hollow out zone (being that light directly passes through) or its combination in any, the penetrating shaft direction of its slow-axis direction corresponding to the liquid crystal molecule of liquid crystal layer 140, first Polarizer 110 decides.
As shown in Figure 3, in penetrating region 171, the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140, the penetrating shaft direction of first Polarizer 110 and the optical axis direction that penetrates delay zone 121 of phase delay chip 120 arrange mutually accordingly, and in echo area 172, the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140, the optical axis direction in the penetrating shaft direction of first Polarizer 110 and the reflection delay district 122 of phase delay chip 120 arranges mutually accordingly, so that penetrating region has identical bright dark attitude performance with the echo area, and can in display panels 100, only use single phase delay chip 120.Wherein, the penetrating shaft direction of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140 and first Polarizer 110 accompanies first angle (α), the optical axis direction of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140 and phase delay chip 120 accompanies second angle (γ), and light has first phase-delay quantity (δ) after by phase delay chip 120, and light has second phase-delay quantity (π Γ) after by liquid crystal layer 140.And the relation that arranges between the optical axis direction of the penetrating shaft direction of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140, first Polarizer 110 and phase delay chip 120 can be according to following formula (1) at the light penetration rate T of penetrating region 171 wherein according to the light penetration rate (T) of penetrating region 171 and the light reflectance (R) of echo area 172:
T＝[sinδsin(2γ)sin(πΓ)]
2+[sinδsin(2γ-2α)cos(πΓ)-sin(2α)cosδsin(πΓ)]
2 (1)
172 light reflectance (R) is according to following formula (2) in the echo area:
R＝[cos(2δ)cos(2πΓ)-sin(2δ)cos(2γ)sin(2πΓ)]
2+{cos(2πΓ)sin(2δ)cos(2γ-2α)+sin(2πΓ)[cos
2(δ)cos(2α)-sin
2(δ)cos(4γ-2α)]}
2 (2)
Therefore, first Polarizer 110, phase delay chip 120 and liquid crystal layer 140 can come corresponding the setting according to the light penetration rate (T) of above-mentioned penetrating region 171 and the light reflectance (R) of echo area 172, use the bright dark attitude performance of control penetrating region 171 and echo area 172.Wherein, can be pushed away by above-mentioned formula (1), when display panels 100 does not apply voltage, and during for bright morphotype formula (when also being normal white mode (Normally White Mode)), can be satisfied with following formula (a) or (b) in the relation that arranges between delay zone 121 and the liquid crystal layer 140 of penetrating of first Polarizer 110 of penetrating region 171, phase delay chip 120:
sin
2(πΓ)＝1，sin
2(2α)＝1，sin
2(δ)＝0 (a)
sin
2(πΓ)＝1，sin
2(2α)＝1，sin
2(2γ-2α)＝0 (b)
Wherein, in formula (a), second angle (γ) can be arbitrary value, and in formula (b), first phase-delay quantity (δ) can be arbitrary value.
When display panels 100 does not apply voltage, and during for dark morphotype formula when pattern (Normally Block Mode) (also be normal black), can be satisfied with following formula (c) in first Polarizer 110 of penetrating region 171, the relation that arranges that penetrates between delay zone 121 and the liquid crystal layer 140 of phase delay chip 120:
sin
2(δ)＝1，sin
2(2γ-2α)＝1，cos
2(πΓ)＝0，sin
2(2γ)＝0(c)
Can be pushed away by above-mentioned formula (2), when display panels 100 does not apply voltage, and when being bright morphotype formula, can be satisfied with following formula (d) in first Polarizer 110 of echo area 172, reflection delay district 122 and the relation that arranges between the liquid crystal layer 140 of phase delay chip 120:
cos(2δ)＝0，cos(2γ-2α)＝0，cos(2πΓ)＝0 (d)
When display panels 100 does not apply voltage, and when being dark morphotype formula, in the reflection delay district 122 of first Polarizer 110 of echo area 172, phase delay chip 120 and the relation that arranges between the liquid crystal layer 140 can be satisfied with following formula (e), (f), (g), (h) or (i):
sin(2γ-2α)≠0，cos(2πΓ)＝0，cos(2α)＝0，sin(δ)＝0 (e)
sin(2γ-2α)≠0，cos(2πΓ)＝0，cos
2(4γ-2α)＝0，cos(δ)＝0 (f)
sin(2γ-2α)＝0，sin(2δ)≠0，cos(2πΓ)＝0，cos(2α)＝0 (g)
sin(δ)＝0，sin(2γ-2α)＝0，cos(2πΓ)＝0，cos(2α)＝0 (h)
cos(δ)＝0，sin(2γ-2α)＝0，cos(2πΓ)＝0，cos(4γ-2α)＝0 (i)
Therefore, the display panels 100 of present embodiment can come the various relations that arrange of corresponding selection by above-mentioned formula (a)～(i), use making penetrating region 171 and echo area 172 have identical bright dark attitude performance, thereby form semi-penetrating and semi-reflective liquid crystal display panel 100.For example when display panels 100 is bright morphotype formula, the relation that arranges in penetrating region 171 can be by formula (a) and (b) is selected, and the relation that arranges in echo area 172 can be selected formula (d).
In addition, for example when display panels 100 was normal black pattern, the relation that arranges in penetrating region 171 can be selected formula (c), and the relation that arranges in echo area 172 can be by formula (e)～(i) select.
Please refer to Fig. 4 A and 4B, for illustrating according to the penetrating region of the display panels of first embodiment of the invention and the structural representation of echo area.In the present embodiment, further give an example to describe in detail the relation that arranges between first Polarizer 110, phase delay chip 120 and the liquid crystal layer 140 of display panels 100 below.When display panels 100 for example is bright morphotype formula, in penetrating region 171, for example satisfy formula (a), at this moment, the axial level angle that penetrates of first Polarizer 110 is 0 degree, the delay zone 121 that penetrates of phase delay chip 120 can be used as full-wave plate (that is δ=λ), and the level angle that penetrates the optical axis direction of delay zone 121 is 5 degree, the level angle of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140 is negative 45 degree, and light is being λ/2 by the second phase-delay quantity π Γ behind the liquid crystal layer 140.In echo area 172, for example satisfy formula (d), at this moment, the axial level angle that penetrates of first Polarizer 110 is 0 degree, the reflection delay district 122 of phase delay chip 120 can be used as quarter-wave plate (that is δ=λ/4), and the level angle that penetrates the optical axis direction of delay zone 121 is 45 degree, and the level angle of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140 is negative 45 degree, and light is being λ/4 by the second phase-delay quantity π Γ behind the liquid crystal layer 140.Thereby the penetrating region 171 of the display panels 100 of present embodiment and echo area 172 can have identical bright dark attitude performance, to form semi-penetrating and semi-reflective liquid crystal display panel.
Therefore, the display panels 100 of present embodiment and comprise that its display device can penetrate delay zone 121 and reflection delay district 122 by being formed with at single phase delay chip 120, make penetrating region 171 and echo area 172 can have identical bright dark attitude performance to be adjusted at the relation that arranges between first Polarizer 110, phase delay chip 120 and the liquid crystal layer 140 in penetrating region 171 and the echo area 172 respectively accordingly, to use.Therefore, the semi-penetrating and semi-reflective liquid crystal display panel of present embodiment can only arrange single phase delay chip, thereby can simplify panel construction and manufacturing process, and then can reduce the product of liquid crystal indicator and the cost of manufacturing.
When the display panels 100 of present embodiment for example is the display panels 100 of monospace, can have the second identical phase-delay quantity (π Γ) at penetrating region 171 with liquid crystal layer 140 in the echo area 172, that is at penetrating region 171 and the identical gap of liquid crystal cell (Cell gap) of liquid crystal layer 140 tools in the echo area 172, thereby can form the display panels 100 of monospace, further simplify technology.At this moment, display panels 100 can show by the bright dark attitude that the relation that arranges of adjusting first Polarizer 110 and phase delay chip 120 is controlled in penetrating region 171 and echo area 172.
Please refer to Fig. 5, it illustrates the structural representation according to the penetrating region of the display panels of second embodiment of the invention.Below only describe with regard to the different place of present embodiment and first embodiment, do not repeat them here about resemblance.Compared to first embodiment, when the display panels 100 of second embodiment for example is bright morphotype formula, in penetrating region 171, for example satisfy formula (b), at this moment, the axial level angle that penetrates of the first Polarizer 110a can be 0 degree, first phase-delay quantity (δ) that penetrates delay zone 121a of phase delay chip 120 can be arbitrary value, that is the delay zone 121a that penetrates of phase delay chip 120 can be quarter-wave lengthy motion picture (λ/4), half-wave plate (λ/2), all-wave lengthy motion picture (λ), the hollow out zone, or its combination in any, and the level angle that penetrates the optical axis direction of delay zone 121a can be 0 degree, the level angle of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140a is negative 45 degree, and light is being λ/2 by second phase-delay quantity (π Γ) behind the liquid crystal layer 140a.
Please refer to Fig. 6 A and Fig. 6 B, it illustrates the structural representation according to the echo area of the display panels of third embodiment of the invention.Below only describe with regard to the different place of present embodiment and first embodiment, do not repeat them here about resemblance.Compared to first embodiment, when the display panels 100 of the 3rd embodiment for example is dark morphotype formula, in echo area 172, for example satisfy formula (e), at this moment, the axial level angle that penetrates of the first Polarizer 110b can be 0 degree, and the reflection delay district 122b of phase delay chip 120 can be the hollow out zone, the level angle of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140b is negative 45 degree, and light is being λ/4 by second phase-delay quantity (π Γ) behind the liquid crystal layer 140b.
At this moment, the reflection delay district 122b of phase delay chip 120 also can be all-wave lengthy motion picture (λ), and the level angle of the optical axis direction of reflection delay district 122b can be 0 degree.
Please refer to Fig. 7, it illustrates according to the display panels of the fourth embodiment of the invention structural representation in the echo area.Below only describe with regard to the different place of present embodiment and first embodiment, do not repeat them here about resemblance.Compared to first embodiment, when the display panels 100 of the 4th embodiment for example is dark morphotype formula, in echo area 172, for example satisfy formula (f), at this moment, the axial level angle that penetrates of the first Polarizer 110c can be 45 degree, the reflection delay district 122c of phase delay chip 120 can be half-wave plate (λ/2), and the level angle of the optical axis direction of reflection delay district 122c can be 22.5 degree, the level angle of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140c is negative 45 degree, and light is being λ/4 by second phase-delay quantity (π Γ) behind the liquid crystal layer 140c.
Please refer to Fig. 8, it illustrates according to the display panels of the fifth embodiment of the invention structural representation in the echo area.Below only describe with regard to the different place of present embodiment and first embodiment, do not repeat them here about resemblance.Compared to first embodiment, when the display panels 100 of the 5th embodiment for example is dark morphotype formula, in echo area 172, for example satisfy formula (h) or (i), at this moment, the axial level angle that penetrates of the first Polarizer 110d can be 0 degree, the reflection delay district 122d of phase delay chip 120 can be half-wave plate (λ/2), and the level angle of the optical axis direction of reflection delay district 122d can be 0 degree, the level angle of the slow-axis direction of the liquid crystal molecule of liquid crystal layer 140d is negative 45 degree, and light is being λ/4 by second phase-delay quantity (π Γ) behind the liquid crystal layer 140d.
By the embodiment of the invention described above as can be known, display panels of the present invention and the display device that comprises it can be adjusted at the relation that arranges between first Polarizer, phase delay chip and the liquid crystal layer in penetrating region and the echo area respectively accordingly, use making penetrating region and echo area can have identical bright dark attitude performance.Therefore, the display panels of the semi-penetration, semi-reflective of present embodiment can only use single phase delay chip, thereby can simplify panel construction and technology.And can select to form the display panels of monospace, with further simplification technology.
Though the present invention discloses as above with embodiment; so it is not in order to limit the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can carry out various changes and retouching, thus protection scope of the present invention when with appended claims and equivalent thereof the person of being defined be as the criterion.
Claims (11)
1. liquid crystal indicator comprises at least:
Module backlight; And
Display panels arranges on this module backlight, and wherein this display panels comprises at least:
First substrate is provided with common electrode layer;
Second substrate, with respect to this first substrate, wherein this second substrate is provided with pixel electrode layer;
Liquid crystal layer is arranged between this first substrate and this second substrate;
A plurality of pixel regions are made of this common electrode layer, this pixel electrode layer and this liquid crystal layer, and wherein each described pixel region has penetrating region and echo area;
First Polarizer is arranged at a side of this first substrate, and with respect to this liquid crystal layer; And
Phase delay chip, be arranged between this first substrate and this first Polarizer, wherein this phase delay chip has a plurality of delay zone and a plurality of reflection delay districts of penetrating, and each described delay zone that penetrates is corresponding to this penetrating region of each described pixel region, and each described reflection delay district is characterized in that corresponding to this echo area of each described pixel region:
Wherein, in this penetrating region, slow-axis direction, the penetrating shaft direction of this first Polarizer and this optical axis direction that penetrates delay zone of this phase delay chip to the liquid crystal molecule of this liquid crystal layer arrange, and in this echo area, optical axis direction to this reflection delay district of the penetrating shaft direction of the slow-axis direction of the liquid crystal molecule of this liquid crystal layer, this first Polarizer and this phase delay chip arranges, use and make this penetrating region and this echo area have identical bright dark attitude performance
Wherein the penetrating shaft direction of the slow-axis direction of the liquid crystal molecule of this liquid crystal layer and this first Polarizer accompanies first angle [alpha], the slow-axis direction of this liquid crystal layer liquid crystal molecule and the optical axis direction of this phase delay chip accompany the second angle γ, and light has the first phase-delay quantity δ after by this phase delay chip, light has the second phase-delay quantity π Γ after by this liquid crystal layer, wherein, in this penetrating region, the slow-axis direction of the liquid crystal molecule of this liquid crystal layer, the relation that arranges between the penetrating shaft direction of this first Polarizer and the optical axis direction of this phase delay chip is the light penetration rate T according to this penetrating region, and light penetration rate T is according to following formula (1):
T=[sin δ sin (2 γ) sin (π Γ)]
2+ [sin δ sin (2 γ-2 α) cos (π Γ)-sin (2 α) cos δ sin (π Γ)]
2Formula (1)
Wherein, in this echo area, the relation that arranges between the penetrating shaft direction of the slow-axis direction of the liquid crystal molecule of this liquid crystal layer, this first Polarizer and the optical axis direction of this phase delay chip is the light reflectance R according to this echo area, and light reflectance R is according to following formula (2):
R=[cos (2 δ) cos (2 π Γ)-sin (2 δ) cos (2 γ) sin (2 π Γ)]
2+ { cos (2 π Γ) sin (2 δ) cos (2 γ-2 α)+sin (2 π Γ) [cos
2(δ) cos (2 α)-sin
2(δ) cos (4 γ-2 α)] }
2Formula (2).
2. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being bright morphotype formula, satisfy following formula (a) in this first Polarizer of this penetrating region, this setting relation that penetrates between delay zone and this liquid crystal layer of this phase delay chip:
sin
2(πΓ)＝1，sin
2(2α)＝1，sin
2(δ)＝0 (a)。
3. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being bright morphotype formula, satisfy following formula (b) in this first Polarizer of this penetrating region, this setting relation that penetrates between delay zone and this liquid crystal layer of this phase delay chip:
sin
2(πΓ)＝1，sin
2(2α)＝1，sin
2(2γ-2α)＝0 (b)。
4. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being dark morphotype formula, satisfy following formula (c) in this first Polarizer of this penetrating region, this setting relation that penetrates between delay zone and this liquid crystal layer of this phase delay chip:
sin
2(δ)＝1，sin
2(2γ-2α)＝1，cos
2(πΓ)＝0，sin
2(2γ)＝0(c)。
5. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being bright morphotype formula, satisfy following formula (d) in this first Polarizer of this echo area, this reflection delay district of this phase delay chip and the relation that arranges between this liquid crystal layer:
cos(2δ)＝0，cos(2γ-2α)＝0，cos(2πΓ)＝0 (d)。
6. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being dark morphotype formula, satisfy following formula (e) in this first Polarizer of this echo area, this reflection delay district of this phase delay chip and the relation that arranges between this liquid crystal layer:
sin(2γ-2α)≠0，cos(2πΓ)＝0，cos(2α)＝0，sin(δ)＝0 (e)。
7. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being dark morphotype formula, satisfy following formula (f) in this first Polarizer of this echo area, this reflection delay district of this phase delay chip and the relation that arranges between this liquid crystal layer:
sin(2γ-2α)≠0，cos(2πΓ)＝0，cos
2(4γ-2α)＝0，cos(δ)＝0 (f)。
8. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being dark morphotype formula, satisfy following formula (g) in this first Polarizer of this echo area, this reflection delay district of this phase delay chip and the relation that arranges between this liquid crystal layer:
sin(2γ-2α)＝0，sin(2δ)≠0，cos(2πΓ)＝0，cos(2α)＝0(g)。
9. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being dark morphotype formula, satisfy following formula (h) in this first Polarizer of this echo area, this reflection delay district of this phase delay chip and the relation that arranges between this liquid crystal layer:
sin(δ)＝0，sin(2γ-2α)＝0，cos(2πΓ)＝0，cos(2α)＝0(h)。
10. liquid crystal indicator according to claim 1, wherein work as this display panels and do not apply voltage, and when being dark morphotype formula, satisfy following formula (i) in this first Polarizer of this echo area, this reflection delay district of this phase delay chip and the relation that arranges between this liquid crystal layer:
cos(δ)＝0，sin(2γ-2α)＝0，cos(2πΓ)＝0，cos(4γ-2α)＝0(i)。
11. liquid crystal indicator according to claim 1, wherein this of this phase delay chip penetrates delay zone or this reflection delay district is used to form quarter-wave lengthy motion picture (λ/4), half-wave plate (λ/2), all-wave lengthy motion picture (λ), hollow out zone or its combination in any.
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| CN103197464B (en) * | 2013-03-29 | 2015-10-21 | 深圳市华星光电技术有限公司 | Display panels and liquid crystal display |
| CN110426886B (en) * | 2019-07-22 | 2022-03-25 | 昆山龙腾光电股份有限公司 | Liquid crystal display panel, driving method thereof and liquid crystal display device |
| US11927851B2 (en) | 2021-01-18 | 2024-03-12 | Beijing Boe Display Technology Co., Ltd. | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153983A (en) * | 2006-09-29 | 2008-04-02 | 株式会社日立显示器 | Liquid crystal display |
| JP2008083219A (en) * | 2006-09-26 | 2008-04-10 | Seiko Epson Corp | Liquid crystal device and electronic apparatus |
| CN101169536A (en) * | 2006-10-24 | 2008-04-30 | 胜华科技股份有限公司 | Semi-transparence type multi-domain liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008083219A (en) * | 2006-09-26 | 2008-04-10 | Seiko Epson Corp | Liquid crystal device and electronic apparatus |
| CN101153983A (en) * | 2006-09-29 | 2008-04-02 | 株式会社日立显示器 | Liquid crystal display |
| CN101169536A (en) * | 2006-10-24 | 2008-04-30 | 胜华科技股份有限公司 | Semi-transparence type multi-domain liquid crystal display device |
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