CN1492263A - Semi transmission type colour liquid crystal display device - Google Patents

Semi transmission type colour liquid crystal display device Download PDF

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Publication number
CN1492263A
CN1492263A CNA031598579A CN03159857A CN1492263A CN 1492263 A CN1492263 A CN 1492263A CN A031598579 A CNA031598579 A CN A031598579A CN 03159857 A CN03159857 A CN 03159857A CN 1492263 A CN1492263 A CN 1492263A
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liquid crystal
mode
display device
crystal display
dyed layer
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CN1251004C (en
Inventor
永田康成
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Kyocera Corp
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Kyocera Corp
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Priority claimed from JP2002281003A external-priority patent/JP3924518B2/en
Priority claimed from JP2002315749A external-priority patent/JP2004151309A/en
Priority claimed from JP2002316812A external-priority patent/JP2004151399A/en
Priority claimed from JP2002323260A external-priority patent/JP3981321B2/en
Priority claimed from JP2002375637A external-priority patent/JP2004205853A/en
Application filed by Kyocera Corp filed Critical Kyocera Corp
Publication of CN1492263A publication Critical patent/CN1492263A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Optical Filters (AREA)

Abstract

The semi-transparent type LCD device of the present invention is formed by laminating an optical reflective film, coloring layer 3, upper passivation layer, transparent electrode and alignment film on a glass substrate, and comprises a light-transmission part 7 whose transmitted areas to the optical reflective film are different with respective coloring layer 3. Also, a recess groove part 8 is formed in the reflective region of each coloring layer 3. By the above constitution, white balance formed by the RGB of transmission mode and reflective mode can be independently set up. Through the white balance adjustment proceeded in this way, a semi-transparent type LCD device with high quality and high performance can be provided.

Description

Semi transmission type colour liquid crystal display device
Technical field
The present invention relates to have the semi transmission type colour liquid crystal display device of reflective-mode and transmission mode both sides' function, particularly relate to and to carry out the semi transmission type colour liquid crystal display device that white balance is adjusted.
Background technology
In recent years, liquid crystal indicator uses in the monitor of small-sized or medium-sized portable data assistance and notebook computer, large-scale and high-resolution.Particularly as portable data assistance etc. in outdoor, the indoor instrument that all uses, under the very strong environment of ambient light, illuminace component as display device, actively utilize ambient light (reflective-mode), under the environment a little less than the ambient light, use the transflective liquid crystal display device of (transmission mode) backlight to be used as main flow.
According to this semi transmission type colour liquid crystal display device, by exterior lightings such as sunshine, fluorescent lights, under reflective-mode, use, or use backlight, use as transmission mode, but, use the semi-transmissive film (with reference to patent documentation 1) of semi-transparent semi-reflecting lens in order to make a liquid crystal indicator have both sides' function.In addition, in the active array type semi transmission type colour liquid crystal display device, because same purpose also proposes to use semi-transmissive film (with reference to patent documentation 2).
If use relevant semi-transmissive film, then there is the very difficult problem that improves reflectivity and transmissivity both sides' function simultaneously, in order to address this problem, also proposed to replace described semi-transmissive film, be provided with the semi transmission type colour liquid crystal display device (with reference to patent documentation 3) of transmittance with the reflectance coating in hole and use.
In described semi-transmissive liquid crystal display device, under transmission mode, light passes through color filter 1 time, and reflective-mode passes through color filter for 2 times, compares with reflective-mode, and the excitation of transmission mode descends.Therefore, proposed spatially to cut apart the zone of using in transmission mode and the reflective-mode, the color filter in the zone by making transmission mode is thicker than the film thickness of the color filter in the zone of reflective-mode, improves the excitation (with reference to patent documentation 4, patent documentation 5) of transmission mode.
In addition, also proposed to make the excitation of reflective-mode and the equal semi transmission type colour liquid crystal display device of excitation of transmission mode by on the color filter in the zone of reflective-mode, opening pin hole.
[patent documentation 1]
Te Kaiping 8-292413 communique
[patent documentation 2]
Te Kaiping 7-318929 communique
[patent documentation 3]
Patent is hanged down No. 2878231 communiques
[patent documentation 4]
The spy opens the 2000-298271 communique
[patent documentation 5]
The spy opens the 2001-166289 communique
; in above-mentioned semi transmission type colour liquid crystal display device, under transmission mode, use the LED lamp as light source; and under reflective-mode; when indoor use, use fluorescent light as light source, when outdoor application; utilize sunshine as light source; like this, under transmission mode and reflective-mode, the light source difference.
Therefore, for transmission mode and reflective-mode both sides, be necessary independently to carry out respectively colour planning, white balance design.
In addition,, form, but promptly use the technology that proposes by patent documentation 4 and patent documentation 5 by R (red), G (green), B (indigo plant) about color filter, also can't the independent design transmission mode and the white balance that constitutes by RGB of reflective-mode.
In addition, even in the color filter in the zone of reflective-mode, be provided with the structure of pin hole, also can't independently set the white balance that constitutes by RGB of transmission mode and reflective-mode.
Summary of the invention
Therefore, the objective of the invention is to: providing can the independent design transmission mode and the semi transmission type colour liquid crystal display device of the white balance that is made of RGB of reflective-mode.
Other purposes of the present invention are: provide the excitation of the excitation that makes reflective-mode and transmission mode basic identical, and can the independent design transmission mode and the semi transmission type colour liquid crystal display device of the white balance that constitutes by RGB of reflective-mode.
A. semi transmission type colour liquid crystal display device of the present invention is characterised in that: comprising: form optical reflection film on an interarea of substrate, form the different dyed layer of painted difference again, the pixel that forms a side who is made of transparent conductive material on these dyed layers successively forms a side's of electrode and oriented film parts; The pixel that forms the opposing party who is made of transparent conductive material on transparency carrier successively forms the opposing party's of electrode and oriented film parts; Be present in the liquid crystal layer between a side parts and the opposing party's the parts; On described optical reflection film, corresponding each dyed layer is provided with the light transmission department of different transmittance areas.
According to described structure, in described optical reflection film, each pixel is provided with light transmission department, constitute transmission mode with this light transmission department, constitute reflective-mode with the zone beyond the light transmission department, thus, become semi transmission type colour liquid crystal display device.
And, when being applicable to transmission mode and reflective-mode both sides,, thus, can independently set the white balance that constitutes by RGB of transmission mode and reflective-mode with the corresponding different light transmission department of transmittance area that is provided with of each dyed layer.By carrying out such white balance adjustment, high-quality and high performance semi transmission type colour liquid crystal display device have been obtained.
B. in addition, semi transmission type colour liquid crystal display device of the present invention is characterised in that: comprising: form optical reflection film and transparent resin layer successively on substrate one interarea, form the different dyed layer of painted difference again, the pixel that forms a side who is made of transparent conductive material on these dyed layers successively forms a side's of electrode and oriented film parts; The pixel that forms the opposing party who is made of transparent conductive material on transparency carrier successively forms the opposing party's of electrode and oriented film parts; Be present in the liquid crystal layer between a quadrate part spare and the opposing party's parts; On described optical reflection film, corresponding with each dyed layer, be provided with light transmission department, corresponding with described each dyed layer, make the area coverage difference of described transparent resin layer for optical reflection film.
According to semi transmission type colour liquid crystal display device of the present invention, structure is such as described, to described optical reflection film, each pixel is provided with light transmission department, constitute transmission mode with this light transmission department, constitute reflective-mode with the zone beyond the light transmission department, thus, become semi transmission type colour liquid crystal display device.
And, according to semi transmission type colour liquid crystal display device of the present invention,, make the area coverage difference of transparent resin layer for optical reflection film by corresponding with each dyed layer, can obtain following action effect.
When being benchmark with the necessary transmissivity of transmission mode, colorrendering quality, when having set each key element (concentration of color and thickness) of the area of light transmission department and color filter (dyed layer), according to semi transmission type colour liquid crystal display device in the past, in this color filter, in reflecting, also form the dyed layer of same color concentration and thickness with the zone, thus, under reflective-mode, show deepening.
And as in the present invention,, make the area coverage difference of transparent resin layer for optical reflection film by using the zone for the reflection of each dyed layer, can add and subtract the amount as color filter (dyed layer) use of this reflection with the zone.Can obtain reflection and compare with regional dyed layer, form effect identical when thinner with dyed layer and the transmission in zone.Therefore, the brightness that can reduce in the reflective-mode descends, or makes the disappearance that descends.
And, according to the present invention, the zone is used in reflection for each dyed layer, by adjusting the area coverage of transparent resin layer for optical reflection film, can independently set the white balance that constitutes by RGB of transmission mode and reflective-mode, by carrying out such white balance adjustment, high-quality and high performance semi transmission type colour liquid crystal display device have been obtained.
C. semi transmission type colour liquid crystal display device of the present invention is characterised in that: comprising: form optical reflection film and transparent resin layer successively on substrate one interarea, form the different dyed layer of painted difference again, the pixel that forms a side who is made of transparent conductive material on these dyed layers successively forms a side's of electrode and oriented film parts; The pixel that forms the opposing party who is made of transparent conductive material on transparency carrier successively forms the opposing party's of electrode and oriented film parts; Be present in the liquid crystal layer between a quadrate part spare and the opposing party's parts; Employing is on described optical reflection film, the corresponding light transmission department that is provided with each dyed layer, make backlight passing through when the reflective-mode with this light transmission department, the structure that ambient light is reflected with the zone when the reflective-mode with the reflection beyond the light transmission department, corresponding with described each dyed layer, make the area coverage difference of described transparent resin layer for light transmission department.
As mentioned above, according to semi transmission type colour liquid crystal display device of the present invention, as described structure, to described light reflective metal level, each pixel is provided with light transmission department, constitutes transmission mode, constitute reflective-mode with the zone beyond the light transmission department with this light transmission department, thus, become semi transmission type colour liquid crystal display device.
And, according to semi transmission type colour liquid crystal display device of the present invention,, make the area coverage difference of transparent resin layer for light transmission department by corresponding with each dyed layer, can obtain following action effect.
When being benchmark with the necessary transmissivity of transmission mode, colorrendering quality, when having set each key element (concentration of color and thickness) of the area of light transmission department and color filter (dyed layer), according to semi transmission type colour liquid crystal display device in the past, in this color filter, in reflecting, also form the dyed layer of same color concentration and thickness with the zone, thus, under reflective-mode, show deepening.
And as in the present invention,, can add and subtract the amount as color filter (dyed layer) use of this transmission with the zone by making the area coverage difference of transparent resin layer for optical reflection film, the demonstration that can make transmission mode is more near reflective-mode.On the contrary, can obtain reflection and compare with regional dyed layer, form effect identical when thinner with dyed layer and the transmission in zone.Therefore, the brightness that can reduce in the reflective-mode descends, or is equivalent to make the disappearance that descends.
And, according to the present invention, as mentioned above, in optical reflection film, each pixel is provided with light transmission department, when being applied to transmission mode and reflective-mode, makes transparent resin layer obtain suitable condition for the area coverage of light transmission department, thus, can independently set the white balance that constitutes by RGB of transmission mode and reflective-mode.And, by carrying out such white balance adjustment, can obtain high-quality and high performance semi transmission type colour liquid crystal display device.
D. semi transmission type colour liquid crystal display device of the present invention is characterised in that: comprising: form optical reflection film on substrate one interarea, form the different dyed layer of painted difference again, the pixel that forms a side who is made of transparent conductive material on these dyed layers successively forms a quadrate part spare of electrode and oriented film; The pixel that forms the opposing party who is made of transparent conductive material on transparency carrier successively forms the opposing party's parts of electrode and oriented film; Be present in the liquid crystal layer between a quadrate part spare and the opposing party's parts; In described optical reflection film, corresponding with each dyed layer, the light transmission department of different light by area is set, and formed notch in the zone in the reflection of each dyed layer.
According to semi transmission type colour liquid crystal display device of the present invention, as described structure, to described optical reflection film, each pixel is provided with light transmission department, constitute transmission mode with this light transmission department, constitute reflective-mode with the zone beyond the light transmission department, thus, become semi transmission type colour liquid crystal display device.
And,,, can obtain following action effect by having formed notch in the zone in the reflection of each dyed layer according to semi transmission type colour liquid crystal display device of the present invention.
When being benchmark with the necessary transmissivity of transmission mode, colorrendering quality, when having set each key element (concentration of color and thickness) of the area of light transmission department and color filter (dyed layer), according to semi transmission type colour liquid crystal display device in the past, in this color filter, in reflecting, also form the dyed layer of same color concentration and thickness with the zone, thus, under reflective-mode, show deepening.
And as in the present invention, by forming notch in the zone in the reflection of each dyed layer, this reflection is identical with the zone with transmission with thickness with the color depth of the color filter (dyed layer) in zone, but, if part and the non-existent part of dyed layer (notch of dyed layer) that comprehensive dyed layer occupies, then because this notch can prevent the dimness that shows.Can obtain with dyed layer and the transmission of reflecting and compare, identical effect when forming thinner thickness with regional dyed layer with the zone.Therefore, the brightness that can reduce in the reflective-mode descends, or makes the disappearance that descends.
By the way, though proposed to make the technology (with reference to patent documentation 5) of the thickness of reflective-mode usefulness dyed layer than the thin thickness of transmission mode usefulness dyed layer,, forming with before the dyed layer, must be pre-formed hyaline layer in the part that becomes reflector space, this increases step.And in the present invention, when forming each dyed layer of RGB, also form the notch of dyed layer simultaneously, thus, number of steps does not increase, and can reduce manufacturing cost.
And, according to the present invention, as mentioned above, each pixel is provided with light transmission department, when being applied to the both sides of transmission mode and reflective-mode, with the corresponding light transmission department that different light is set by area of relevant each dyed layer, thus, the white balance that constitutes by RGB of transmission mode and reflective-mode can be independently set,, high-quality and high performance semi transmission type colour liquid crystal display device can be obtained by carrying out such white balance adjustment.
E. semi transmission type colour liquid crystal display device of the present invention is characterised in that: comprising: a side's who form optical reflection film successively on substrate one interarea, is made of transparent conductive material pixel forms a quadrate part spare of electrode and oriented film; Form the different dyed layer of painted difference on transparency carrier, the pixel that forms the opposing party who is made of transparent conductive material on these dyed layers successively forms the opposing party's parts of electrode and oriented film; Be present in the liquid crystal layer between a quadrate part spare and the opposing party's parts; In described optical reflection film, corresponding with each dyed layer, be provided with the light transmission department of different light by area.
According to semi transmission type colour liquid crystal display device of the present invention, to compare with the semi transmission type colour liquid crystal display device of explanation before this, difference is: dyed layer is not formed in a quadrate part spare, and is formed on the opposing party's parts.
As described structure, to described optical reflection film, each pixel is provided with light transmission department, constitute transmission mode with this light transmission department, constitute reflective-mode with the zone beyond the light transmission department, thus, become semi transmission type colour liquid crystal display device.
And, when being applied to transmission mode and reflective-mode both sides,, thus, can independently set the white balance that constitutes by RGB of transmission mode and reflective-mode with the corresponding different light transmission department of transmittance area that is provided with of each dyed layer.By carrying out such white balance adjustment, can obtain high-quality and high performance semi transmission type colour liquid crystal display device.
F. in described semi transmission type colour liquid crystal display device, wish to form notch during reflection at each dyed layer is with the zone.
By forming notch in the zone, can obtain following action effect in the reflection of each dyed layer.
When being benchmark with the necessary transmissivity of transmission mode, colorrendering quality, when having set each key element (concentration of color and thickness) of the area of light transmission department and color filter (dyed layer), according to semi transmission type colour liquid crystal display device in the past, in this color filter, in reflecting, also form the dyed layer of same color concentration and thickness with the zone, thus, under reflective-mode, show deepening.
And as in the present invention, by forming notch in the zone in the reflection of each dyed layer, this reflection is identical with the zone with transmission with thickness with the color depth of the color filter (dyed layer) in zone, but, if part and the non-existent part of dyed layer (notch of dyed layer) that comprehensive dyed layer occupies, then because this notch can prevent the dimness that shows.Can obtain with dyed layer and the transmission of reflecting and compare, identical effect when forming thinner thickness with regional dyed layer with the zone.Therefore, the brightness that can reduce in the reflective-mode descends, or makes the disappearance that descends.
By the way, though proposed to make the technology (with reference to patent documentation 5) of the thickness of reflective-mode usefulness dyed layer than the thin thickness of transmission mode usefulness dyed layer,, forming with before the dyed layer, must be pre-formed hyaline layer in the part that becomes reflector space, this increases step.
And in the present invention, when forming each dyed layer of RGB, also form the notch of dyed layer simultaneously, thus, number of steps does not increase, and can reduce manufacturing cost.
Description of drawings
Fig. 1 is the profile schema diagram of the semi transmission type colour liquid crystal display device A1 of the embodiment of the invention 1.
Fig. 2 is the planimetric map of expression light transmission department 7.
Fig. 3 is based on the cut-open view of cut-out upper thread X-X shown in Figure 2.
Fig. 4 is based on the cut-open view of cut-out upper thread Y-Y shown in Figure 2.
Fig. 5 is a planimetric map of representing the light transmission department 7 of semi transmission type colour liquid crystal display device in the past.
Fig. 6 is based on the cut-open view of cut-out upper thread Z-Z shown in Figure 5.
Fig. 7 is the chromatic diagram under semi transmission type colour liquid crystal display device B1 both sides' the transmission mode of semi transmission type colour liquid crystal display device A1 and comparative example.
Fig. 8 is the chromatic diagram under semi transmission type colour liquid crystal display device B1 both sides' the reflective-mode of semi transmission type colour liquid crystal display device A1 and comparative example.
Fig. 9 (a) is the key diagram of the assay method in the expression reflective-mode, and Fig. 9 (b) is the key diagram of the assay method in the expression transmission mode.
Figure 10 is the definition figure of expression gamut area.
Figure 11 is the profile schema diagram of the optical reflection film 2 of semi transmission type colour liquid crystal display device A2 of the expression embodiment of the invention 2 and transparent resin layer P both sides' relation.
Figure 12 is same plane model figure.
Figure 13 is the chromatic diagram under semi transmission type colour liquid crystal display device B2 both sides' the transmission mode of semi transmission type colour liquid crystal display device A2 and comparative example.
Figure 14 is the chromatic diagram under semi transmission type colour liquid crystal display device B2 both sides' the reflective-mode of semi transmission type colour liquid crystal display device A2 and comparative example.
Figure 15 be the light transmission department 7 of semi transmission type colour liquid crystal display device A3 of the expression embodiment of the invention 3 and transparent resin layer P both sides relation analyse and observe mode chart.
Figure 16 is same plane model figure.
Figure 17 is the chromatic diagram under semi transmission type colour liquid crystal display device B3 both sides' the transmission mode of semi transmission type colour liquid crystal display device A3 and comparative example.
Figure 18 is the chromatic diagram under semi transmission type colour liquid crystal display device B3 both sides' the reflective-mode of semi transmission type colour liquid crystal display device A3 and comparative example.
Figure 19 be the embodiment of the invention 4 semi transmission type colour liquid crystal display device A4 analyse and observe mode chart.
Figure 20 is the plane model figure of the dyed layer 3 of expression semi transmission type colour liquid crystal display device A4 and notch 8 both sides' relation.
Figure 21 is a plane model figure of representing the dyed layer 3 of semi transmission type colour liquid crystal display device in the past and notch 7 both sides' relation.
Figure 22 is based on the cut-open view of cut-out upper thread a-a shown in Figure 21.
Figure 23 is based on the cut-open view of cut-out upper thread b-b shown in Figure 21.
Figure 24 is the chromatic diagram under semi transmission type colour liquid crystal display device B4 both sides' the transmission mode of semi transmission type colour liquid crystal display device A4 and comparative example.
Figure 25 is the chromatic diagram under semi transmission type colour liquid crystal display device B4 both sides' the reflective-mode of semi transmission type colour liquid crystal display device A4 and comparative example.
Figure 26 be the embodiment of the invention 5 semi transmission type colour liquid crystal display device A5 analyse and observe mode chart.
Figure 27 is the plane model figure of the light transmission department H of expression semi transmission type colour liquid crystal display device A5 and notch A both sides' relation.
Figure 28 is based on the cut-open view of cut-out upper thread X-X shown in Figure 27.
Figure 29 is based on the cut-open view of cut-out upper thread Y-Y shown in Figure 27.
Figure 30 is a plane model figure of representing the light transmission department H of semi transmission type colour liquid crystal display device in the past and notch A both sides' relation.
Figure 31 is the chromatic diagram under semi transmission type colour liquid crystal display device B5 both sides' the transmission mode of semi transmission type colour liquid crystal display device A5 and comparative example.
Figure 32 is the chromatic diagram under semi transmission type colour liquid crystal display device B5 both sides' the reflective-mode of semi transmission type colour liquid crystal display device A5 and comparative example.
Embodiment
Below, the embodiment of the semi transmission type colour liquid crystal display device that present invention will be described in detail with reference to the accompanying.
Embodiment 1
Fig. 1 be the embodiment of the invention 1 semi transmission type colour liquid crystal display device A1 analyse and observe mode chart, Fig. 2 is the mode chart of the optical reflection film of expression semi transmission type colour liquid crystal display device A1 and dyed layer both sides' relation.In addition, semi transmission type colour liquid crystal display device A1 is a STN type simple matrix mode.
Fig. 3 is based on the cut-open view of cut-out upper thread X-X shown in Figure 2, and Fig. 4 is based on the cut-open view of cut-out upper thread Y-Y shown in Figure 2.
When semi transmission type colour liquid crystal display device A1 observes this semi transmission type colour liquid crystal display device A1 as the observer, by public side " a quadrate part spare " formation near " the opposing party's parts " and its opposition side of observer's side.
In the quadrate part spare of semi transmission type colour liquid crystal display device A1, the 1st, the glass substrate of public side for example forms the optical reflection film that is made of aluminum metallic material etc. on this glass substrate 1.On this optical reflection film 2, form the transparent resin layer P that PHA094X, PHA103X etc. that the chemistry of Nippon Steel for example makes are made of propenyl.Only wish stacked transparent resin layer P on the optical reflection film 2 except light transmission department 7.
On transparent resin layer P, form the dyed layer 3 that constitutes by color filter again, be covered with chromatograph 3 again and form the protective seam 4 that constitutes by propylene resin.And, on protective seam 4, stack gradually a plurality of transparency electrode 5 that constitutes by ITO, frictions that are arranged in parallel to band shape and be the oriented film 6 that constitutes by polyimide resin of certain orientation.In addition, between transparency electrode 5 and oriented film 6, can exist by resin or SiO 2Deng the dielectric film that constitutes.
In the present embodiment, corresponding with each dyed layer 3 of optical reflection film 2, according to the difference of colors such as red, green, blue, the light transmission department 7 of different light by area is set.The shape of protective seam 4 is elongated rectangular as shown in Figure 2, but the present invention is not limited thereto, can be arbitrary shape.For example, can be oval.In addition, in Fig. 2, the number of light transmission department 7 and each dyed layer 3 correspond to one, but be not limited to 1, can be divided into light transmission department a plurality of and are provided with.
Below, the formation method of light transmission department 7 is described.At first, on glass substrate 1, form the aluminum metal film, then this aluminum metal film a series of lithography steps such as is peeled off by resist coating, exposure, development, the etching of aluminum metal film, resist,, become required form light transmission department 7 compositions by sputter.
In addition,, replace Al, can use the metal film of Al alloy, Ag metal and Ag alloy etc. such as AlNd as the material of optical reflection film 2.
Like this, by each pixel is provided with light transmission department 7, in transmission mode, this light transmission department 7 of transmission backlight (being called transmission) with regional.Zone beyond the light transmission department 7 (be called reflection with zone) in reflective-mode, make from above light reflect.
According to the present invention, corresponding with each dyed layer 3, according to the difference of colors such as red, green, blue, be the area of light transmission department 7 that light is set at difference by area.
Coating has disperseed the photonasty resist of pigment (red, green, blue) in advance on substrate, forms (pigment dispersing mode) dyed layer 3 by photoetching.
In addition, when forming dyed layer 3, replace described pigment dispersing mode, can use decoration method.
In addition, shown in Figure 2 as expression optical reflection film 2 and dyed layer 3 both sides' relation can be the structure of having surrounded each dyed layer 3 by black matrix 18.
Then, in the opposing party's parts, the 9th, show the glass substrate of side, on this glass substrate 9, form a plurality of banded transparency electrode groups 10 that constitute by ITO that are arranged in parallel successively, on banded transparency electrode group 10, form the oriented film 11 that by polyimide resin constitute of friction again for certain orientation.
Then, glass substrate 9 and glass substrate 1 across the liquid crystal layer 12 that for example constitutes by the nematic crystal that reverses with 200 °～260 ° angle, both sides' banded transparency electrode group 5,10 is intersected (quadrature), be pasted together by seal member (not shown).In addition, though not shown, for 1,9 of two glass substrates, make the thickness of liquid crystal layer 12 certain, dispose a plurality of spacing blocks.
Stack gradually the polaroid 15 of first phase difference plate 13 that constitutes by polycarbonate, second phase difference plate 14, iodine class in the outside of glass substrate 9, stack gradually the third phase difference plate 16 that constitutes by polycarbonate, the polaroid 17 of iodine class in the outside of glass substrate 1.When their configuration, paste by the jointing material that propylene class material constitutes by coating.
Then, the polaroid 17 to glass substrate 1 side of a quadrate part spare is close to the backlight assembly that for example is made of light source portion such as LED or cold-cathode tube and light guide plate.
If according to semi transmission type colour liquid crystal display device A1 of the present invention, corresponding with each dyed layer 3 of optical reflection film 2 then as mentioned above, according to the difference of colors such as red, green, blue, the light transmission department 7 of different light by area is set.Thus,, make transmissivity different respectively with reflectivity for each RGB, can the independent design transmission mode and the white balance that constitutes by RGB of reflective-mode.By carrying out such colour planning and white balance adjustment, can obtain high-quality and high performance semi transmission type colour liquid crystal display device A1.
Below, embodiment is described.
For above-mentioned semi transmission type colour liquid crystal display device A1 of the present invention, carry out colour planning for transmission mode, reflective-mode oppose respectively, set white balance, to each dyed layer 3, to each RGB by required transmissivity and the reflectivity of having determined.
In the present embodiment promptly, light reflex film 2, corresponding with each dyed layer 3, according to the difference of colors such as red, green, blue, form the light transmission department 7 of different light by area, but as shown in table 1, the area of this light transmission department 7 all accounts for 39% for pixel in the pixel of R (red), in the pixel of G (green), all account for 39% for pixel, in the pixel of B (indigo plant), all account for 27% for pixel.
[table 1]
Transmission mode Reflective-mode
Routine in the past Beam orifice ?Y ?x ?Y The CF aperture opening ratio Y ?x ?y
?R ?0.30 ?32.5 ?0.515 ?0.311 ?R ?- ?32.5 ?0.515 ?0.311
?G ?0.30 ?75.4 ?0.332 ?0.469 ?G ?- ?75.4 ?0.332 ?0.469
?B ?0.30 ?29.7 ?0.206 ?0.212 ?B ?- ?29.7 ?0.206 ?0.212
?W ?45.9 ?0.336 ?0.339 ?W ?- ?45.9 ?0.336 ?0.339
?NTSC ?21.1 ?NTSC ?- ?21.1
Embodiment Beam orifice ?Y ?x ?Y Beam orifice ?Y ?x ?y
?R ?0.39 ?43.3 ?0.515 ?0.311 ?R ?27.9 ?0.515 ?0.311
?G ?0.39 ?100.6 ?0.322 ?0.469 ?G ?64.8 ?0.332 ?0.469
?B ?0.27 ?26.5 ?0.206 ?0.212 ?B ?31.1 ?0.206 ?0.212
?W ?56.8 ?0.352 ?0.356 ?W ?41.3 ?0.326 ?0.330
The NTSC ratio The NTSC ratio ?21.1
In addition, as in the past the example (comparative example), made corresponding with each dyed layer 3 on the optical reflection film 2, of all kinds for red, green, blue etc., form the light transmission department 7 of the light of identical size, the semi transmission type colour liquid crystal display device B1 that other structures are identical with semi transmission type colour liquid crystal display device A1 by area.
Fig. 5, Fig. 6 are the mode charts of the optical reflection film of expression semi transmission type colour liquid crystal display device B1 and dyed layer both sides' relation.In addition, Fig. 5 is the mode chart corresponding with Fig. 2, and Fig. 6 is based on the cut-open view of cut-out upper thread Z-Z shown in Figure 5.
According to semi transmission type colour liquid crystal display device B1, the light of the light transmission department 7 of optical reflection film 2 is as shown in table 1 by area, and each pixel of RGB all is that pixel is all accounted for 30%.
Fig. 7 and Fig. 8 represent the semi transmission type colour liquid crystal display device B both sides' of semi transmission type colour liquid crystal display device A of the present invention and comparative example the chromatic diagram of optical characteristics.
Fig. 7 represents the chromatic diagram under both sides' the transmission mode, and Fig. 8 represents the chromatic diagram under both sides' the reflective-mode.
According to Fig. 7, Fig. 8, about the embodiment of the invention, with in the past the example (comparative example) compare, the colourity of the white balance W of R, G, B is in transmission mode, become big (Δ x, Δ y)=(0.016,0.017), under reflective-mode, reduce (Δ x, Δ y)=(0.010,0.009).Promptly according to embodiment, to compare with example in the past, white balance moves to yellow direction under transmission mode, under reflective-mode, moves to blue direction.
As a reference, with reference to Fig. 9 the optical characteristics evaluation method of using in the present embodiment is described.
When being reflective-mode, shown in Fig. 9 (a), display surface to liquid crystal indicator, make light (illuminant-C) incident from oblique upper 15o, then, the catoptrical reflectivity of vertical direction, contrast, the gamut area of (white demonstration, black demonstration, red demonstration, green demonstration, the blue demonstration) have obtained evaluation result when by mensuration liquid crystal indicator being driven.
In addition, about transmission mode, shown in Fig. 9 (b), for the back side of having removed liquid crystal panel backlight, make light (illuminant-C) incident, then, transmissivity, contrast, the gamut area of the vertical direction transmitted light of (white demonstration, black demonstration, red demonstration, green demonstration, the blue demonstration) have obtained evaluation result when by mensuration liquid crystal indicator being driven.
In addition, in Figure 10, the definition figure of expression gamut area.Gamut area has represented to surround the area of each RGB chroma point and the ratio of NTST.This area is big more, and color reproduction is high more, has obtained the high panel of colour purity and has shown.
Embodiment 2
Below, the embodiment of the invention 2 is described.
The semi transmission type colour liquid crystal display device A2 of embodiment 2 analyse and observe mode chart and Fig. 1 is same, but semi transmission type colour liquid crystal display device A2 compares with semi transmission type colour liquid crystal display device A1, exists following different.
Promptly corresponding with each dyed layer, make the area coverage difference of transparent resin layer P for optical reflection film 2.Figure 11 and Figure 12 have represented details.Figure 11 and Figure 12 are the mode charts of the optical reflection film 2 of expression semi transmission type colour liquid crystal display device A2 and transparent resin layer P both sides' relation, and Figure 11 wants portion's cut-open view, and Figure 12 wants facial planes figure.
In semi transmission type colour liquid crystal display device A2, corresponding with each dyed layer 3, promptly according to the difference of colors such as red, green, blue, make transparent resin layer P for optical reflection film 2 area coverage differences.
The optical reflection film 2 of dependency structure is at first on glass substrate 1, by sputter, with formation metal films such as aluminium, then this aluminum metal film a series of lithography steps such as is peeled off by resist coating, exposure, development, the etching of aluminum metal film, resist, to light transmission department 7 compositions, become required form.
By corresponding with each dyed layer 3 such light transmission department 7, be the pixel setting according to colors such as red, green, blues, make transmittance when the transmission mode with this light transmission department 7, with the zone reflected light when reflective-mode beyond the light transmission department 7.
According to semi transmission type colour liquid crystal display device of the present invention, corresponding in the zone of the optical reflection film 2 beyond the reflection of each dyed layer 3 with the zone is light transmission department 7 with each dyed layer 3, make the area coverage difference of transparent resin layer P for optical reflection film 2.Thus, the dyed layer 3 in reflective-mode zone can freely be set the area ratio of the part of thin thickness.If increase the area of thin part, just can obtain effect identical when forming thin dyed layer 3, can reduce the reduction of the brightness reflective-mode under, maybe can make this brightness reduction disappearance.
Like this,, set transmissivity and reflectivity respectively, can carry out colour planning for each RGB, can the independent design transmission mode and the white balance that constitutes by RGB of reflective-mode.By carrying out relevant colors design and white balance adjustment, can obtain high-quality and high performance semi transmission type colour liquid crystal display device A2.
Below, embodiment is described.
For above-mentioned semi transmission type colour liquid crystal display device A2 of the present invention, carry out colour planning for transmission mode, reflective-mode oppose respectively, set white balance, to each dyed layer 3, to each RGB by required transmissivity and the reflectivity of having determined.
In the present embodiment promptly, corresponding with each dyed layer 3, difference according to colors such as red, green, blues, make the area coverage difference of transparent resin layer P for optical reflection film 2, but it is as shown in table 2, the ratio of this area coverage is in the pixel of R (red), all account for 100% for optical reflection film 2, in the pixel of G (green), all account for 100% for optical reflection film 2, in the pixel of B (indigo plant), all account for 75% (in the same table, " transparent resin/reflecting part " is the ratio of this area coverage) for optical reflection film 2.
[table 2]
Transmission mode Reflective-mode
Example 2 in the past Transparent resin/reflecting part ????Y ????x ??Y Transparent resin/reflecting part ??Y ????x ????y
????R ????100％ ????0.515 ??0.311 ????R ????100％ ??0.515 ??0.311
????G ????100％ ????0.332 ??0.469 ????G ????100％ ??0.332 ??0.469
????B ????100％ ????0.206 ??0.212 ????B ????100％ ??0.206 ??0.212
????W ????3.0 ????0.336 ??0.339 ????W ??26.2 ??0.336 ??0.339
The NTSC ratio ????????????????????21.1 The NTSC ratio ??????????????????????21.1
Embodiment 4 Transparent resin/reflecting part ????Y ????x ??Y Transparent resin/reflecting part ??Y ????x ????y
????R ????100％ ????0.515 ??0.311 ????R ????100％ ??0.515 ??0.311
????G ????100％ ????0.322 ??0.469 ????G ????100％ ??0.332 ??0.469
????B ????75％ ????0.206 ??0.212 ????B ????75％ ??0.182 ??0.168
????W ????3.0 ????0.336 ??0.339 ????W ??25.4 ??0.325 ??0.328
The NTSC ratio ??????????????????21.1 The NTSC ratio ????????????????????????22.3
In addition, as example (comparative example) in the past, made corresponding with each dyed layer 3, of all kinds for red, green, blue etc., form transparent resin layer P, the semi transmission type colour liquid crystal display device B2 that other structures are identical with semi transmission type colour liquid crystal display device A2 with identical area coverage ratio 100%.
In addition, the light of the light transmission department 7 of optical reflection film 2 is that each pixel of RGB all is that pixel is all accounted for 30% by area.
Figure 13 and Figure 14 represent the semi transmission type colour liquid crystal display device B2 both sides' of semi transmission type colour liquid crystal display device A2 of the present invention and comparative example the chromatic diagram of optical characteristics.This evaluation method is identical with the method for explanation among the embodiment 1.
Figure 13 represents the chromatic diagram under both sides' the transmission mode, and Figure 14 represents the chromatic diagram under both sides' the reflective-mode.
According to Figure 13, Figure 14, about the embodiment of the invention, with in the past the example (comparative example) compare, in transmission mode, the embodiment of the invention is identical with the colourity of the white balance W of R, G, the B of example (comparative example) in the past, but about reflective-mode, reduces (Δ x, Δ y)=(0.011,0.011).Promptly according to embodiment, to compare with example in the past, white balance is constant under transmission mode, under reflective-mode, moves to blue direction.Here,,, pass through the balance of the CF of change RGB, can adjust though white balance does not change about transmission mode.
Embodiment 3
Below, embodiments of the invention 3 are described.
The semi transmission type colour liquid crystal display device A3 of embodiment 3 analyse and observe mode chart and Fig. 1 is same, but semi transmission type colour liquid crystal display device A3 compares with semi transmission type colour liquid crystal display device A1, exists following different.
Figure 15 and Figure 16 are the mode charts of the optical reflection film of expression semi transmission type colour liquid crystal display device A3 and dyed layer both sides' relation, and Figure 15 is the major part cut-open view, and Figure 16 is the major part planimetric map.
Present embodiment is characterised in that: corresponding with each dyed layer, make the area coverage difference of transparent resin layer for light transmission department.Figure 15 and Figure 16 have represented details.
With reference to Figure 15 and Figure 16, corresponding with each dyed layer 3, promptly according to the difference of colors such as red, green, blue, make the window area coverage difference of transparent resin layer P for the transparent resin layer P of light transmission department 7.
According to semi transmission type colour liquid crystal display device 3 of the present invention, by using in the zone in the reflection of each dyed layer 3, corresponding with each dyed layer 3, make the area coverage difference of transparent resin layer P for light transmission department 7, can add and subtract color filter (dyed layer 3) and the amount used as regional transmission.
The demonstration that can also make transmission mode is near reflective-mode.On the contrary, reflection is compared with regional dyed layer with reflection with the dyed layer in zone, can obtain effect identical when making its thickness attenuation, the brightness of the brightness that can make reflective-mode during near transmission mode.
According to the present invention, as mentioned above, corresponding with each dyed layer 3, according to the difference of colors such as red, green, blue, the light transmission department 7 of light by area is set, by making the area coverage difference of transparent resin layer P for light transmission department 7, to each RGB, make transmissivity different respectively, can independently carry out colour planning with reflectivity, can the independent design transmission mode and the white balance that constitutes by RGB of reflective-mode.By carrying out relevant colors design and white balance adjustment, can obtain high-quality and high performance semi transmission type colour liquid crystal display device A3.
Below, embodiment is described.
For above-mentioned semi transmission type colour liquid crystal display device A3 of the present invention, carry out colour planning for transmission mode, reflective-mode oppose respectively, set white balance, to each dyed layer 3, to each RGB by required transmissivity and the reflectivity of having determined.
In the present embodiment, corresponding with each dyed layer 3, according to the difference of colors such as red, green, blue, make the area coverage difference of transparent resin layer P for light transmission department 7.As shown in table 3, the ratio of this area coverage is in the pixel of R (red), all account for 70% for light transmission department 7, in the pixel of G (green), all account for 70% for light transmission department 7, in the pixel of B (indigo plant), all account for 100% (in the same table, " transparent resin/transmissive portions " is the ratio of this area coverage) for light transmission department 7.
[table 3]
Transmission mode Reflective-mode
Routine in the past Transparent resin/transmissive portions ????Y ????X ??Y Transparent resin/transmissive portions ??Y ??x ??y
????R ????100％ ????0.515 ??0.311 ????R ????100％ ????0.515 ??0.311
????G ????100％ ????0.332 ??0.469 ????G ????100％ ????0.332 ??0.469
????B ????100％ ????0.206 ??0.212 ????B ????100％ ????0.206 ??0.212
????W ????3.0 ????0.336 ??0.339 ????W ????26.2 ????0.336 ??0.339
The NTSC ratio ???????????????????????21.1 The NTSC ratio ????????????????????????21.1
Embodiment Transparent resin/transmissive portions ????Y ????x ??Y Transparent resin/transmissive portions ??Y ??x ??y
????R ????70％ ????29.3 ????0.538 ??0.314 ????R ????70％ ????0.515 ??0.311
????G ????70％ ????71.1 ????0.329 ??0.488 ????G ????70％ ????0.332 ??0.469
????B ????100％ ????29.7 ????0.206 ??0.212 ????B ????100％ ????0.206 ??0.212
????W ????2.8 ????0.344 ??0.347 ????W ????26.2 ????0.336 ??0.339
The NTSC ratio ???????????????????????24.9 The NTSC ratio ????????????????????????21.1
In addition, as example (comparative example) in the past, made corresponding with each dyed layer 3, of all kinds for red, green, blue etc., form transparent resin layer P, the semi transmission type colour liquid crystal display device B3 that other structures are identical with semi transmission type colour liquid crystal display device A3 with identical area coverage ratio 100%.
The light of the light transmission department 7 of optical reflection film 2 is that each pixel of RGB all is that pixel is all accounted for 30% by area.
Figure 17 and Figure 18 represent the semi transmission type colour liquid crystal display device B3 both sides' of semi transmission type colour liquid crystal display device A3 of the present invention and comparative example the chromatic diagram of optical characteristics.
Figure 17 represents the chromatic diagram under both sides' the transmission mode, and Figure 18 represents the chromatic diagram under both sides' the reflective-mode.
As Figure 17 and shown in Figure 180, about reflective-mode, the embodiment of the invention is basic identical with the colourity of the white balance W of R, G, the B of example (comparative example) in the past, but in transmission mode, the embodiment of the invention is compared with example (comparative example) in the past, increases (Δ x, Δ y)=(0.008,0.008).And according to embodiment, white balance is constant when transmission mode, moves to yellow direction in reflective-mode.Here, about reflective-mode, white balance is constant, but passes through the balance of the CF of change RGB, can adjust.
Embodiment 4
Below, embodiments of the invention 4 are described.
Figure 19 is the mode chart of analysing and observe of semi transmission type colour liquid crystal display device A4 of the present invention, and Figure 20 is the mode chart of the optical reflection film of expression semi transmission type colour liquid crystal display device A4 and dyed layer both sides' relation.In addition, semi transmission type colour liquid crystal display device A4 is a STN type simple matrix mode.
When semi transmission type colour liquid crystal display device A4 observes this semi transmission type colour liquid crystal display device A4 as the observer, by constituting near observer's " the opposing party's parts " and " a quadrate part spare " of its opposition side.
In a quadrate part spare, the 1st, the glass substrate of public side.For example on this glass substrate 1, form the optical reflection film 2 that constitutes by aluminum metallic material etc.Form dyed layer 3 thereon, be covered with chromatograph 3 again and form the protective seam 4 that constitutes by propylene resin.And, on protective seam 4, stack gradually a plurality of transparency electrode 5 that constitutes by ITO, frictions that are arranged in parallel to band shape and be the oriented film 6 that constitutes by polyimide resin of certain orientation.In addition, between transparency electrode 5 and oriented film 6, can exist by resin or SiO 2Deng the dielectric film that constitutes.
In each dyed layer 3,, be provided with and do not share the same light by the light transmission department 7 of area promptly according to the difference of colors such as red, green, blue.
Below, the manufacture method of the optical reflection film 2 and the dyed layer 3 of dependency structure is described.
On glass substrate 1, form the aluminum metal film by sputter, then this aluminum metal film a series of lithography steps such as is peeled off by resist coating, exposure, development, the etching of aluminum metal film, resist, to each light transmission department 7 composition, become required form.
In addition,, replace Al, can use the metal film of Al alloy, Ag metal and Ag alloy etc. such as AlNd as the material of optical reflection film 2.
Then, forming dyed layer 3 by the pigment dispersing mode is color filter.Promptly the photonasty resist that coating is in harmonious proportion by pigment (red, green, blue) in advance on substrate forms by photoetching.
Like this, in each dyed layer 3,, be provided with the light transmission department 7 of different light by area according to the difference of colors such as red, green, blue.Make transmittance with this light transmission department 7, make the light reflection with the zone beyond the light transmission department 7.Because light transmission department 7 makes transmittance, so be called transmission with regional.Zone beyond the light transmission department 7 makes the light reflection, so be called reflection with regional.
According to the present invention, there is not the notch 8 of (perhaps being unstained) with zone formation pigment in the reflection of dyed layer 3.
Figure 20 is the planimetric map of the configuration of expression notch 8.According to Figure 20, be the structure of having surrounded each dyed layer 3 by black matrix 18.According to this structure,,, form notch 8 by cutting away the part of dyed layer 3 in the inside of black matrix 18.The shape of notch 8 is triangle in Figure 20, but is not limited to triangle, can be shape arbitrarily such as circle, ellipse, quadrilateral.
Below, the opposing party's parts are described.In the opposing party's parts, the 9th, show the glass substrate of side, on this glass substrate 9, form a plurality of banded transparency electrode groups 10 that constitute by ITO that are arranged in parallel successively.On banded transparency electrode group 10, form the oriented film 11 that by polyimide resin constitute of friction again for certain orientation.
Then, across the liquid crystal layer 12 that for example constitutes, both sides' banded transparency electrode group 5,10 is intersected (quadrature), be pasted together by seal member (not shown) by the nematic crystal that reverses with the angle of 200o～260o.In addition, though not shown, for 1,9 of two glass substrates, make the thickness of liquid crystal layer 12 certain, dispose a plurality of spacing blocks.
Stack gradually the polaroid 15 of first phase difference plate 13 that constitutes by polycarbonate, second phase difference plate 14, iodine class in the outside of glass substrate 9.
In addition, stack gradually the third phase difference plate 16 that constitutes by polycarbonate, the polaroid 17 of iodine class in the outside of the glass substrate 1 of a quadrate part spare.When their configuration, paste by the jointing material that propylene class material constitutes by coating.
Then, to the polaroid 17 of glass substrate 1 side, the backlight assembly that for example is made of light source portion such as LED or cold-cathode tube and light guide plate is close to.
According to semi transmission type colour liquid crystal display device A4 of the present invention,, form the notch 8 of basic identical area with the zone in the reflection of each dyed layer 3 for each pixel of the basic identical area corresponding with each dyed layer 3.By forming this notch 8, under reflective-mode, can increase reflection light quantity, can prevent the dimness that shows.Disappear even the brightness under the reflective-mode descends, maybe can reduce to descend.
Promptly by notch of the present invention, can obtain identical effect when only making its thickness attenuation with in the dyed layer of reflection with the zone.
This reflection light quantity becomes the function of the area ratio of the part that the non-existent part of dyed layer (notch of dyed layer) and dyed layer occupy.Area is bigger than more, and reflection light quantity increases more., if area than excessive, then catoptrical coloring effect dies down.
According to the present invention, as mentioned above, corresponding with each dyed layer 3 of optical reflection film 2, difference according to colors such as red, green, blues, the light transmission department 7 of different light by area is set, by it and described notch 8, to each RGB, make transmissivity different respectively with reflectivity, can carry out colour planning, the white balance that constitutes by RGB of transmission mode and reflective-mode can be independently set,, high-quality and high performance semi transmission type colour liquid crystal display device A4 can be obtained by carrying out such colour planning and white balance adjustment.
Below, embodiment is described.
For above-mentioned semi transmission type colour liquid crystal display device A4 of the present invention, carry out colour planning for transmission mode, reflective-mode oppose respectively, set white balance, to each dyed layer 3, to each RGB by required transmissivity and the reflectivity of having determined.
Promptly in an embodiment, corresponding with each dyed layer 3 of optical reflection film 2, according to the difference of colors such as red, green, blue, form the light transmission department 7 of different light by area, but as shown in table 4, the area of this light transmission department 7 is set in the pixel of R (red), all account for 39% for pixel, in the pixel of G (green), all account for 39% for pixel, in the pixel of B (indigo plant), all account for 27% for pixel.The area of the notch 8 of dyed layer 3 is public in each pixel of RGB, with the zone, accounts for 15% (in the same table, being expressed as the CF aperture opening ratio) for reflection.
[table 4]
Embodiment Beam orifice Y ????x ?Y The CF aperture opening ratio ?Y ?x ??y
????R ??39％ ?0.500 ?0.310 ?R ?15％ ?0.483 ??0.327
????G ??39％ ?0.333 ?0.459 ?G ?15％ ?0.325 ??0.469
????B ??27％ ?0.213 ?0.221 ?B ?15％ ?0.224 ??0.209
????W ??3.8 ?0.350 ??0.352 ?W ??20.1 ?0.323 ??0.326
The NTSC ratio ???????????????????18.1 ?NTSC ????????????????????17.4
In addition, as in the past the example (comparative example), made in the semi transmission type colour liquid crystal display device A4 of described structure, corresponding with each dyed layer 3 of optical reflection film 2, of all kinds for red, green, blue etc., form the light transmission department 7 of the light of identical size, the semi transmission type colour liquid crystal display device B4 that other structures are identical with semi transmission type colour liquid crystal display device A4 by area.
Figure 21～Figure 23 is the mode chart of the optical reflection film of the relevant semi transmission type colour liquid crystal display device B1 of expression and dyed layer both sides' relation.
Figure 21 is the planimetric map of the configuration of the dyed layer 3 of expression semi transmission type colour liquid crystal display device B1 and notch 8, and Figure 22 is based on the cut-open view of the cut-out upper thread a-a of Figure 21, and Figure 23 is based on the cut-open view of the cut-out upper thread b-b of Figure 21.
According to semi transmission type colour liquid crystal display device B4, the light of light transmission department 7 is as shown in table 5 by area, and each pixel of RGB all is that pixel is all accounted for 30%.In addition, the area of the notch 8 of dyed layer 3 is public at each pigment of RGB, with the zone, accounts for 15% (in the same table, being expressed as the CF aperture opening ratio) for reflection.
[table 5]
Transmission mode Reflective-mode
Comparative example is example in the past Beam orifice ??T ????x ????Y The CF aperture opening ratio ????R ????x ????y
????R ??30％ ??0.500 ??0.310 ????R ??15％ ??0.492 ??0.327
????G ??30％ ??0.333 ??0.459 ????G ??15％ ??0.325 ??0.475
????B ??30％ ??0.213 ??0.221 ????B ??15％ ??0.226 ??0.211
????W ????3.1 ??0.335 ??0.338 ????W ????24.9 ??0.337 ??0.343
The NTSC ratio ?????????????????????18.1 The NTSC ratio ????????????????????????18.5
In addition, Figure 24 and Figure 25 represent the semi transmission type colour liquid crystal display device B both sides' of semi transmission type colour liquid crystal display device A4 of the present invention and comparative example B4 the chromatic diagram of optical characteristics.
In addition, Figure 24 and Figure 25 represent the semi transmission type colour liquid crystal display device B4 both sides' of semi transmission type colour liquid crystal display device A4 of the present invention and comparative example the chromatic diagram of optical characteristics.
Figure 24 represents the chromatic diagram under both sides' the transmission mode, and Figure 25 represents the chromatic diagram under both sides' the reflective-mode.
About the embodiment of the invention, to compare with example (comparative example) in the past, the colourity of the white balance W of R, G, B becomes big (Δ x, Δ y)=(0.015,0.014) in transmission mode, under reflective-mode, reduce (Δ x, Δ y)=(0.014,0.017).Promptly according to embodiment, to compare with example in the past, white balance moves to yellow direction under transmission mode, under reflective-mode, moves to blue direction.
As a reference, the optical characteristics evaluation method of using in the present embodiment is described.
When being reflective-mode, display surface to liquid crystal indicator, make light (illuminant-C) incident from oblique upper 15o, then, the catoptrical reflectivity of vertical direction, contrast, the gamut area of (white demonstration, black demonstration, red demonstration, green demonstration, the blue demonstration) have obtained evaluation result when by mensuration liquid crystal indicator being driven.
In addition, about transmission mode, for the back side of having removed liquid crystal panel backlight, make light (illuminant-C) incident, then, transmissivity, contrast, the gamut area of the vertical direction transmitted light of (white demonstration, black demonstration, red demonstration, green demonstration, the blue demonstration) have obtained evaluation result when by mensuration liquid crystal indicator being driven.
In addition, in Figure 10, the definition figure of expression gamut area.Gamut area has represented to surround the area of each RGB chroma point and the ratio of NTST.This area is big more, and color reproduction is high more, has obtained the high panel of colour purity and has shown.
Embodiment 5
Below, the embodiment 5 of semi transmission type colour liquid crystal display device of the present invention is described.
Figure 26 is the mode chart of analysing and observe of semi transmission type colour liquid crystal display device A5.In addition, Figure 27～Figure 29 is the mode chart of the optical reflection film of expression semi transmission type colour liquid crystal display device A5 and dyed layer both sides' relation, and Figure 27 is its planimetric map, and Figure 28 is based on the cut-open view that cuts off upper thread X-X, is based on the cut-open view that cuts off upper thread Y-Y.
In the quadrate part spare of semi transmission type colour liquid crystal display device A5, the 1st, the glass substrate of public side.On this glass substrate 1, form a plurality of being arranged in parallel and be the transparency electrode group 5 who constitutes by ITO of band shape, on this transparency electrode group 5, form the optical reflection film 2 that constitutes by aluminum metallic material etc. again, form the oriented film 6 that by polyimide resin constitute of friction again for certain orientation.
In addition,, replace Al, can use the metal film of Al alloy, Ag metal and Ag alloy etc. such as AlNd as the material of optical reflection film 2.
In the opposing party's parts, the 9th, the glass substrate of demonstration side forms dyed layer 3 on this glass substrate 9, be covered with chromatograph 3 again and form the protective seam 4 that is made of propylene resin.Then, on protective seam 4, stack gradually the oriented film 11 that constitutes by polyimide resin that a plurality of transparency electrode 10 that is made of ITO, frictions that are arranged in parallel to band shape are certain orientation.In addition, between transparency electrode 10 and oriented film 11, can exist by resin or SiO 2Deng the dielectric film that constitutes.
In the present invention, corresponding with the dyed layer 3 of the opposing party's substrate, promptly according to the difference of colors such as red, green, blue, the light transmission department H of different light by area is set.The shape of light transmission department H is elongated rectangle as shown in figure 27, but the present invention is not limited thereto, can be shape arbitrarily.For example, can be oval.In addition, corresponding with each dyed layer 3 in Figure 27, the number of light transmission department 7 is one, but be not limited thereto, and can partly be divided into transmittance a plurality of and is provided with.
Described optical reflection film 2 is at first on glass substrate 1, form banded transparency electrode group 5, form the aluminum metal film by sputter, then this aluminum metal film a series of lithography steps such as is peeled off by resist coating, exposure, development, the etching of aluminum metal film, resist, to light transmission department H composition, become required form.
Like this, by light transmission department H is set, this light transmission department of transmission H during light transmissive mode is when reflective-mode, by the regional reflex beyond the light transmission department H.
Light transmission department H is corresponding with each dyed layer 3, according to the difference of colors such as red, green, blue, has different light and passes through area.Thus,, make transmissivity different respectively, can carry out colour planning, can independently set the white balance that constitutes by RGB of transmission mode and reflective-mode with reflectivity for of all kinds.By carrying out such colour planning and white balance adjustment, can obtain high-quality and high performance semi transmission type colour liquid crystal display device A4.
By the pigment dispersing mode, promptly the photonasty resist that coating is in harmonious proportion by pigment (red, green, blue) in advance on substrate is a color filter by photoetching formation dyed layer 3.According to this pigment dispersing mode, can in this photoetching, form simultaneously.
In addition, when formation dyed layer 3 is color filter, replace described pigment dispersing mode, also can use decoration method.
In addition, can adopt the structure of surrounding each dyed layer 3 by black matrix 18.
According to the present invention, its feature also is: use in the reflection of each dyed layer 3 to form notch A in the zone.
In the reflection usefulness zone of the inside of deceiving matrix 18, each dyed layer 3, the part by in the reflection usefulness zone of cutting away each dyed layer 3 forms notch A.The shape of notch A is quadrilateral in Figure 27, but is not limited to quadrilateral, can be shape arbitrarily such as circle, ellipse, triangle.
For each pixel of the basic identical area corresponding with each dyed layer 3, notch A also is equal area substantially.
By forming notch A, even reflection is identical with the zone with transmission with thickness with the concentration of the color of the color filter (dyed layer) in zone, if part and the non-existent part of dyed layer (notch of dyed layer) that comprehensive dyed layer occupies, then, can prevent the dimness of the demonstration in the reflective-mode owing to this notch A.
Importantly, can obtain with the dyed layer that reflects with the zone and compare with the zone, identical effect when only making its thickness attenuation with transmission.The brightness that can reduce under the reflective-mode descends, or this decline is disappeared.
According to the present invention, as mentioned above, corresponding with each dyed layer 3, according to the difference of colors such as red, green, blue, the light transmission department H of different light by area is set, thus, for each RGB, make transmissivity different respectively, can carry out colour planning, can independently set the white balance that constitutes by RGB of transmission mode and reflective-mode with reflectivity.By carrying out such colour planning and white balance adjustment, can obtain high-quality and high performance semi transmission type colour liquid crystal display device A4.
Below, embodiment is described.
For above-mentioned semi transmission type colour liquid crystal display device A5 of the present invention, carry out colour planning for transmission mode, reflective-mode oppose respectively, set white balance, to each dyed layer 3, to each RGB by required transmissivity and the reflectivity of having determined.
Promptly in an embodiment, corresponding with each dyed layer 3, difference according to colors such as red, green, blues, form the light transmission department H of different light by area, but it is as shown in table 6, the area of this light transmission department H is set in the pixel of R (red), all account for 39% for pixel, in the pixel of G (green), all account for 39% for pixel, in the pixel of B (indigo plant), all account for 27% for pixel, the area of the notch 8 of dyed layer 3 is public in each pixel of RGB, uses the zone for reflection, account for 15% (in the same table, being expressed as the CF aperture opening ratio).
[table 6]
Embodiment Beam orifice ??Y ?x ?Y The CF aperture opening ratio ?Y ?x ?y
?R ?39％ ?44.8 ?0.500 ?0.310 ?R ?0.15 ?28.0 ?0.483 ?0.327
?G ?39％ ?100.2 ?0.333 ?0.459 ?G ?0.15 ?53.9 ?0.325 ?0.469
?B ?27％ ?29.3 ?0.213 ?0.221 ?B ?0.15 ?29.5 ?0.224 ?0.209
?W ?58.1 ?0.350 ?0.352 ?W ?37.1 ?0.323 ?0.326
The NTSC ratio ?18.1 The NTSC ratio ?17.4
In addition, as example (comparative example) in the past, made each dyed layer 3 correspondence, of all kinds for red, green, blue etc., form the light transmission department of the light of identical size, the semi transmission type colour liquid crystal display device B5 that other structures are identical with semi transmission type colour liquid crystal display device A5 by area.
Figure 30 is the mode chart of the optical reflection film of the relevant semi transmission type colour liquid crystal display device B5 of expression and dyed layer both sides' relation.
In addition, the light of the light transmission department of optical reflection film 2 is as shown in table 7 by area, and each pixel of RGB all is that pixel is all accounted for 30%.In addition, the area of the notch A of dyed layer 3 is public at each pigment of RGB, with the zone, accounts for 15% (in the same table, being expressed as the CF aperture opening ratio) for reflection.
[table 7]
Transmission mode Reflective-mode
Beam orifice ??Y ??x ??Y The CF aperture opening ratio ????Y ????x ????Y
????R ??0.30 ??34.3 ??0.500 ??0.310 ????R ????0.15 ??34.6 ??0.492 ????0.327
????G ??0.30 ??77.1 ??0.333 ??0.459 ????G ????0.15 ??68.8 ??0.325 ????0.475
????B ??0.30 ??32.6 ??0.213 ??0.221 ????B ????0.15 ??27.8 ??0.226 ????0.211
????W ??48.0 ??0.335 ??0.338 ????W ??43.7 ??0.337 ????0.343
The NTSC ratio ??18.1 The NTSC ratio ??18.5
In addition, Figure 31 and Figure 32 represent the semi transmission type colour liquid crystal display device B both sides' of semi transmission type colour liquid crystal display device A5 of the present invention and comparative example B5 the chromatic diagram of optical characteristics.
Figure 31 represents the chromatic diagram under both sides' the transmission mode, and Figure 32 represents the chromatic diagram under both sides' the reflective-mode.
As mentioned above, about the embodiment of the invention, with in the past the example (comparative example) compare, the colourity of the white balance W of R, G, B is in transmission mode, become big (Δ x, Δ y)=(0.015,0.014), under reflective-mode, reduce (Δ x, Δ y)=(0.014,0.017).And, according to embodiment, to compare with example in the past, white balance moves to yellow direction under transmission mode, under reflective-mode, moves to blue direction.
Enforcement of the present invention more than has been described from 1～5, but the present invention is not limited to described embodiment.For example, affiliated semi transmission type colour liquid crystal display device is a STN type simple matrix mode, but replaces this mode, also can produce action effect in the active type liquid crystal indicator of built-in TFT and TFD.In addition, in scope of the present invention, can carry out various changes.

Claims (6)

1. semi transmission type colour liquid crystal display device is characterized in that: comprising:
Form optical reflection film on an interarea of substrate, form the different multilayer dyed layer of painted difference again, the pixel that forms a side who is made of transparent conductive material on these dyed layers successively forms a side's of electrode and oriented film parts;
The pixel that forms the opposing party who is made of transparent conductive material on transparency carrier successively forms the opposing party's of electrode and oriented film parts;
Be present in the liquid crystal layer between a side parts and the opposing party's the parts;
On described optical reflection film, corresponding with each dyed layer, light transmission department is set;
Employing makes backlight passing through when the transmission mode by this light transmission department, and the reflection beyond light transmission department makes the structure of light reflection with the zone when reflective-mode;
Corresponding each dyed layer of described light transmission department has different transmittance areas.
2. semi transmission type colour liquid crystal display device is characterized in that: comprising:
Form optical reflection film, transparent resin layer successively on an interarea of substrate, form the different dyed layer of painted difference again, the pixel that forms a side who is made of transparent conductive material on these dyed layers successively forms a side's of electrode and oriented film parts;
The pixel that forms the opposing party who is made of transparent conductive material on transparency carrier successively forms the opposing party's of electrode and oriented film parts;
Be present in the liquid crystal layer between a side parts and the opposing party's the parts;
On described optical reflection film, corresponding with each dyed layer, light transmission department is set;
Employing makes backlight passing through when the transmission mode by this light transmission department, and the reflection beyond light transmission department makes the structure of ambient light reflection with the zone when reflective-mode;
Corresponding described each dyed layer makes the area coverage difference of described transparent resin layer for optical reflection film.
3. semi transmission type colour liquid crystal display device is characterized in that: comprising:
Form optical reflection film, transparent resin layer successively on an interarea of substrate, form the different dyed layer of painted difference again, the pixel that forms a side who is made of transparent conductive material on these dyed layers successively forms a side's of electrode and oriented film parts;
The pixel that forms the opposing party who is made of transparent conductive material on transparency carrier successively forms the opposing party's of electrode and oriented film parts;
Be present in the liquid crystal layer between a quadrate part spare and the opposing party's parts;
On described optical reflection film, corresponding with each dyed layer, light transmission department is set;
Employing makes backlight passing through when the transmission mode by this light transmission department, the structure that the reflection beyond light transmission department reflects light with the zone during at reflective-mode;
Corresponding described each dyed layer makes the area coverage difference of described transparent resin layer for light transmission department.
4. semi transmission type colour liquid crystal display device according to claim 1 is characterized in that:
Formed notch in the reflection of each dyed layer in the zone.
5. semi transmission type colour liquid crystal display device is characterized in that: comprising:
A side's who forms optical reflection film successively on substrate one interarea, be made of transparent conductive material pixel forms a side's of electrode and oriented film parts;
Form the different dyed layer of painted difference on transparency carrier, the pixel that forms the opposing party who is made of transparent conductive material on these dyed layers successively forms the opposing party's of electrode and oriented film parts;
Be present in the liquid crystal layer between a quadrate part spare and the opposing party's parts;
On described optical reflection film, corresponding with each dyed layer, light transmission department is set;
Employing makes backlight passing through when the transmission mode by this light transmission department, with the reflection beyond the light transmission department with the zone, when reflective-mode, make the structure of light reflection;
Corresponding each dyed layer of described light transmission department has different transmittance areas.
6. semi transmission type colour liquid crystal display device according to claim 1 is characterized in that: formed notch in the reflection of each dyed layer in the zone.
CNB031598579A 2002-09-26 2003-09-26 Semi transmission type colour liquid crystal display device Expired - Fee Related CN1251004C (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2002281003 2002-09-26
JP2002281003A JP3924518B2 (en) 2002-09-26 2002-09-26 Transflective color liquid crystal display device
JP2002315749 2002-10-30
JP2002315749A JP2004151309A (en) 2002-10-30 2002-10-30 Transflective color liquid crystal display device
JP2002316812 2002-10-30
JP2002316812A JP2004151399A (en) 2002-10-30 2002-10-30 Semitransmissive color liquid crystal display device
JP2002323260 2002-11-07
JP2002323260A JP3981321B2 (en) 2002-11-07 2002-11-07 Liquid crystal panel and liquid crystal display device including the liquid crystal panel
JP2002375637A JP2004205853A (en) 2002-12-25 2002-12-25 Semi-transmission type color liquid crystal display
JP2002375637 2002-12-25

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US7701533B2 (en) 2005-07-07 2010-04-20 Epson Imaging Devices Corporation Electro-optical device and electronic apparatus
US7791692B2 (en) 2005-06-27 2010-09-07 Samsung Electronics Co., Ltd. TFT array panel having a first pixel region having first transmissive with first and third reflective electrodes and a second pixel region having second transmissive with second and fourth reflective electrodes where the area ratios of the first and third reflective electrodes to the second and fourth reflective electrodes are different
CN101405644B (en) * 2006-03-20 2010-12-01 夏普株式会社 Display
US7990499B2 (en) 2006-03-20 2011-08-02 Sharp Kabushiki Kaisha Display device
CN101430456B (en) * 2007-11-05 2011-11-09 乐金显示有限公司 Backlight unit and LCD device using the same
CN101424834B (en) * 2007-10-31 2012-06-20 索尼株式会社 Display apparatus
CN102914905A (en) * 2012-10-12 2013-02-06 京东方科技集团股份有限公司 Color film substrate and semitransparent semi-reflective liquid crystal display device

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7791692B2 (en) 2005-06-27 2010-09-07 Samsung Electronics Co., Ltd. TFT array panel having a first pixel region having first transmissive with first and third reflective electrodes and a second pixel region having second transmissive with second and fourth reflective electrodes where the area ratios of the first and third reflective electrodes to the second and fourth reflective electrodes are different
US7701533B2 (en) 2005-07-07 2010-04-20 Epson Imaging Devices Corporation Electro-optical device and electronic apparatus
CN101405644B (en) * 2006-03-20 2010-12-01 夏普株式会社 Display
US7916245B2 (en) 2006-03-20 2011-03-29 Sharp Kabushiki Kaisha Display device
US7990499B2 (en) 2006-03-20 2011-08-02 Sharp Kabushiki Kaisha Display device
CN101424834B (en) * 2007-10-31 2012-06-20 索尼株式会社 Display apparatus
CN101430456B (en) * 2007-11-05 2011-11-09 乐金显示有限公司 Backlight unit and LCD device using the same
CN102914905A (en) * 2012-10-12 2013-02-06 京东方科技集团股份有限公司 Color film substrate and semitransparent semi-reflective liquid crystal display device
CN102914905B (en) * 2012-10-12 2015-04-29 京东方科技集团股份有限公司 Color film substrate and semitransparent semi-reflective liquid crystal display device
US9128319B2 (en) * 2012-10-12 2015-09-08 Boe Technology Group Co., Ltd. Color filter substrate and transflective liquid crystal display device

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KR20040027441A (en) 2004-04-01

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