CN102866546B - Display device and display panel - Google Patents
Display device and display panel Download PDFInfo
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- CN102866546B CN102866546B CN201210385712.0A CN201210385712A CN102866546B CN 102866546 B CN102866546 B CN 102866546B CN 201210385712 A CN201210385712 A CN 201210385712A CN 102866546 B CN102866546 B CN 102866546B
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- 239000000758 substrate Substances 0.000 claims abstract description 78
- 230000005684 electric field Effects 0.000 claims description 33
- 230000010415 tropism Effects 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- RQIPKMUHKBASFK-UHFFFAOYSA-N [O-2].[Zn+2].[Ge+2].[In+3] Chemical compound [O-2].[Zn+2].[Ge+2].[In+3] RQIPKMUHKBASFK-UHFFFAOYSA-N 0.000 description 1
- -1 aluminium tin-oxide Chemical compound 0.000 description 1
- JYMITAMFTJDTAE-UHFFFAOYSA-N aluminum zinc oxygen(2-) Chemical compound [O-2].[Al+3].[Zn+2] JYMITAMFTJDTAE-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133613—Direct backlight characterized by the sequence of light sources
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13775—Polymer-stabilized liquid crystal layers
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13793—Blue phases
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Geometry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A display device comprises a display panel and a light source module. The display panel comprises a first substrate, a second substrate and a display medium. The first substrate is provided with a plurality of first electrodes and second electrodes which are alternately arranged, and a first space is arranged between every two adjacent first electrodes. The second substrate has a plurality of third electrodes and fourth electrodes alternately arranged thereon, and a second distance is formed between each two adjacent electrodes, wherein the second distance is not equal to the first distance. The light source module comprises a first wavelength light source group, a second wavelength light source group and a third wavelength light source group. When the first wavelength light source group is lighted, the display medium is driven through the first electrode and the second electrode. When the second wavelength light source group is lighted, the display medium is driven through the third electrode and the fourth electrode. A display panel is also disclosed.
Description
[technical field]
The invention relates to a kind of display device and display panel, and relate to a kind of display device and the display panel with Different electrodes spacing especially.
[background technology]
In order to the demand in response to consuming public, the display dealer that is correlated with drops into the exploitation of blue phase (blue phase) liquid crystal display with rapid answer characteristic one after another.For blue phase (blue phase) liquid crystal material, generally need transverse electric field to carry out the function operating to make it have light valve.Someone adopts the electrode design of coplanar conversion IPS (In-Plane Switching) display module to drive the blue phase liquid crystal molecule in blue phase (blue phase) liquid crystal display at present.
Although blue phase liquid crystal has the advantages such as tropism such as rapid answer time and optics, have the shortcoming that driving voltage is higher, its driving voltage usually need up to 55 volts.In addition, have the blue-phase liquid crystal display panel of the pixel cell of plane conversion type, the region occupied by its strip pattern is dark space D, makes the penetrance of blue-phase liquid crystal display panel not good.Therefore, blue phase liquid crystal is adopted to be the space that the display device of display medium or the design of display panel are still improved.
[summary of the invention]
The invention provides a kind of display device and display panel thereof, utilize Different electrodes spacing to produce good penetrance and to solve its colour cast problem.
The present invention proposes a kind of display device, comprises a display panel and a light source module.Aforesaid display panel comprises a first substrate, a second substrate and a display medium.Wherein first substrate has multiple first electrode of setting alternating with each other and multiple second electrode, there is between each the first electrode and second adjacent electrode one first spacing.Second substrate is positioned at the subtend of first substrate, second substrate have multiple 3rd electrode of setting alternating with each other and multiple 4th electrode, wherein between each the 3rd electrode and the 4th adjacent electrode, there is one second spacing, and the second spacing and the first spacing unequal.Display medium is between first substrate and second substrate.
The present invention separately proposes a kind of display panel, and this display panel has at least one first pixel cell, at least one second pixel cell and at least one 3rd pixel cell.Wherein the first pixel cell, the second pixel cell and the 3rd pixel cell comprise a first substrate, a second substrate, a chromatic filter layer and a display medium respectively.Aforesaid first substrate has multiple first electrode of setting alternating with each other and multiple second electrode, wherein between each the first electrode and second adjacent electrode, there is first-class pitch spacing.
Based on above-mentioned, in display device of the present invention and display panel, between Different electrodes group, there is different spacing, to produce the electric field of different size.In a display device, the light source group that the electric field driven of the different sizes that the spacing utilizing these different produces is different, with the problem of the penetrance and colour cast of improving display device.In addition, in display panel of the present invention, the pixel cell that the electric field driven of the different sizes that the spacing utilizing these different produces is different, can reach the penetrance improving display panel equally and improve the effect of colour cast problem.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings to be described in detail below.
[accompanying drawing explanation]
Fig. 1 is the schematic perspective view of the display device according to one embodiment of the invention.
Fig. 2 A is the local top view of the first substrate of Fig. 1.
Fig. 2 B is the local top view of the second substrate of Fig. 1.
Fig. 3 is the pixel circuit schematic diagram of the display device of Fig. 1.
Fig. 4 is the part sectioned view of the display device of Fig. 1.
Fig. 5 is the schematic perspective view of the display panel according to one embodiment of the invention.
Fig. 6 is the pixel circuit schematic diagram of the display panel of Fig. 5.
Fig. 7 is the part sectioned view of the display panel of Fig. 5.
Fig. 8 is the driving voltage-penetrance curve map (V-T curves) of the display device of Fig. 1.
[main element symbol description]
100: display device
110,200: display panel
112,222: first substrate
112a, 222a: the first electrode
112b, 222b: the second electrode
114,224: second substrate
114a: the three electrode
114b: the four electrode
116,228: display medium
120: light source module
122: first wave length light source group
124: second wave length light source group
126: the three-wavelength source groups
220: the first pixel cell
220a: red pixel cell
226: chromatic filter layer
226a: red filter pattern
226b: blue filter pattern
226c: green filter pattern
240: the second pixel cell
240a: green pixel cell
260: the three pixel cell
260a: blue pixel cell
D1: the first spacing
D2: the second spacing
W, w1: live width
D3, d4, d5: wait pitch spacing
T: transistor
DL: data line
SL: sweep trace
CL: common electrode line
E1, E2, E3: transverse electric field
[embodiment]
First embodiment
Fig. 1 is the schematic perspective view of the display device according to one embodiment of the invention.Please refer to Fig. 1, display device 100 comprises display panel 110 and a light source module 120.Aforesaid display panel 110 comprises first substrate 112, second substrate 114 and a display medium 116.Wherein, second substrate 114 is positioned at the subtend of first substrate 112, and display medium 116 is between first substrate 112 and second substrate 114.Light source module 120 is positioned at the side of display panel 110.In the present embodiment, be for light source module 120 in that side near first substrate 112, but light source module 120 also can be situated near that side of second substrate 114.
Fig. 2 A is the local top view of the first substrate 112 of Fig. 1.Please also refer to Fig. 1 and Fig. 2 A, first substrate 112 has multiple first electrode 112a of setting alternating with each other and multiple second electrode 112b, between each the first electrode 112a and second adjacent electrode 112b, there is one first spacing d1.Fig. 2 B is the local top view of the second substrate 114 of Fig. 1.Then please also refer to Fig. 1 and Fig. 2 B, second substrate 114 has multiple 3rd electrode 114a of setting alternating with each other and multiple 4th electrode 114b, wherein between each the 3rd electrode 114a and the 4th adjacent electrode 114b, there is one second spacing d2, and the second spacing d2 and the first spacing d1 is unequal.
Refer again to Fig. 1, aforesaid light source module 120 comprises first wave length light source group 122, second wave length light source group 124 and a three-wavelength source group 126.When display panel 110 presents display frame, first, second and three-wavelength source group 122,124 and 126 are sequentially lighted.When the first wave length light source group 122 of light source module 120 is lit, drive display medium 116 by the first electrode 112a on first substrate 112 and the second electrode 112b.When the second wave length light source group 124 of light source module 120 is lit, drive display medium 116 by the 3rd electrode 114a on second substrate 114 and the 4th electrode 114b.
After the first electrode 112a and the second electrode 112b is applied in voltage, the first spacing d1 can affect the electric field level produced between the first electrode 112a and the second electrode 112b.In like manner, the second spacing d2 can affect the electric field level produced between the 3rd electrode 114a and the 4th electrode 114b.In the present embodiment, the first spacing d1 and the second spacing d2 is unequal, and the electric field level meeting namely produced between the first electrode 112a from the second electrode 112b of anticipating is different with the electric field level produced between the 3rd electrode 114a and the 4th electrode 114b.In the present embodiment, utilize the electric field driven light sources with different wavelengths group of different size, when applying single voltage to improve, display device 100 produces the problem that penetration reduces, and the colour cast situation produced when avoiding high voltage.
Fig. 3 is the pixel circuit schematic diagram of the display device of Fig. 1.Specifically, the first electrode 112a and a transistor T of the present embodiment are electrically connected, the second electrode 112b be electrically connected with electrode wires CL altogether.One end of transistor T connects with sweep trace SL, and the other end connects with data line DL.At this, whether transistor T can write the on-off element of the first electrode 112a as voltage information, and the pattern of transistor T can be bottom grid film transistor or top gate-type thin film transistor.When transistor T be unlocked make voltage information write the first electrode 112a time, the first electrode 112a is applied in a voltage, and its magnitude of voltage is different from the magnitude of voltage of common electrode line CL, makes to have voltage difference between the first electrode 112a and the second electrode 112b.Now, between the first electrode 112a and the second electrode 112b, produce an electric field, to drive display medium 116.Then, when the first wave length light source group 122 in light source module 120 is lit, the first electrode 112a on first substrate 112 and the second electrode 112b drives display medium 116 in aforesaid mode.
In the present embodiment, the 3rd electrode 114a on second substrate 114 and the 4th electrode 114b drives the mode of display medium 116 identical with the first electrode 112a and the second electrode 112b.3rd electrode 114a is connected with an electric transistor equally, and the 4th electrode 114b be electrically connected by electrode wires altogether.When the second wave length light source group 124 in light source module 120 is lit, the 3rd electrode 114a on second substrate 114 and the 4th electrode 114b drives display medium 116 in aforesaid mode.
In the present embodiment, when first wave length light source group 122 is lit, drive display medium 116 by the first electrode 112a on first substrate 112 and the second electrode 112b.When the second wave length light source group 124 of light source module 120 is lit, drive display medium 116 by the 3rd electrode 114a on second substrate 114 and the 4th electrode 114b.After first wave length light source group 122 and second wave length light source group 124 are lit, then when the three-wavelength source group 126 of light source module 120 is lit, drive display medium 116 by the first electrode 112a on first substrate 112 and the second electrode 112b, or drive display medium 116 by the 3rd electrode 114a on second substrate 114 and the 4th electrode 114b.
Specifically, the wavelength size of each wavelength light source group 122,124,126 of light source module 120 is not identical.At this, the wavelength of first wave length light source group 122 is greater than the wavelength of second wave length light source group 124, and the wavelength of second wave length light source group 124 is greater than the wavelength of three-wavelength source group 126.For example, what first wave length light source group 122 sent is ruddiness, and what second wave length light source group 124 sent is green glow, and what three-wavelength source group 126 sent is blue light.That is, the display device 100 of the present embodiment adopts look sequence method, the image of red, green, blue three look is switched the effect producing colour mixture on a timeline fast, and utilize different electrode separation d1, d2 produce different size the display medium 116 that corresponds to drive the wavelength light source group 122,124,126 of different colours of electric field.
In addition, the first spacing d1 between the first electrode 112a and the second adjacent electrode 112b is less than the second spacing d2 between the 3rd electrode 114a and the 4th adjacent electrode 114b.In other words, in the present embodiment, be with two electrode 112a, 112b between less the first spacing d1 of spacing drive the longest first wave length light source group 122 of wavelength, with the second spacing d2 that the spacing between two electrode 114a, 114b is larger drive wavelength time second wave length light source group 124.In the present embodiment, the difference between the first spacing d1 and the second spacing d2 is more than or equal to 0.2 micron; In another embodiment, the first spacing d1 and the second spacing d2 difference are more than or equal to 0.5 micron, and are less than or equal to 5 microns; In preferred embodiment, the difference of the first spacing d1 and the second spacing d2 is more than or equal to 0.8 micron, and is less than or equal to 1.5 microns, and such as the difference of the first spacing d1 and the second spacing d2 is about 1 micron.
Refer again to Fig. 2 A and Fig. 2 B, in the present embodiment, is identical with the live width w of the second electrode 112b with the first electrode 112a, and the 3rd electrode 114a is also all example mutually with the live width w of the 4th electrode 114b is described.Certainly, the live width w of the first electrode 112a and the live width w of the second electrode 112b can be incomplete same.In like manner, the live width w of the 3rd electrode 114a and the live width w of the 4th electrode 114b also can be incomplete same, and being familiar with person skilled in art can make design alteration with demand during realistic application to each electrode live width.In addition, as Fig. 2 A and Fig. 2 B illustrate, the first spacing d1 and the second spacing d2 is respectively first-class pitch spacing.That is, the size of each the first spacing d1 between the first electrode 112a with the second electrode 112b is equal, and the size of each the second spacing d2 between the 3rd electrode 114a with the 4th electrode 114b is equal.
Fig. 4 is the part sectioned view of the display device of Fig. 1.Please refer to Fig. 4, the first electrode 112a and the second electrode 112b is disposed alternately on first substrate 112, and the 3rd electrode 114a and the 4th electrode 114b is disposed alternately on second substrate 114.First electrode 112a and the second electrode 112b be position at grade, and the 3rd electrode 114a and the 4th electrode 114b be position at grade.In other words, the present embodiment is that the display device 100 switching (In-Plane Switching, IPS) formula for copline for display device 100 is described.At this, first electrode 112a, the second electrode 112b, the 3rd electrode 114a and the 4th electrode 114b can be transparency electrodes, its material comprises metal oxide, and it is such as indium tin oxide, indium-zinc oxide, aluminium tin-oxide, aluminium zinc oxide, indium germanium zinc oxide or other suitable metal oxide or above-mentioned at least the two stack layer.
In addition, in the present embodiment, display medium 116 is have the tropisms such as optics (optically isotropic) when not bestowing an electric field.According to the present embodiment, above-mentioned display medium 116 comprises blue phase liquid crystal, and it is such as that polymer stabilizing type blue phase liquid crystal (polymer-stabilized blue phase liquidcrystals) or polymer stabilizing type etc. are to phase liquid crystal (polymer-stabilized isotropicphase liquid crystals) etc.In the present embodiment, display medium 116 is through the formation of electric field and drives, and display medium 116 is changed, with the effect making display medium 116 play light valve between tropism and optical anisotropy at optics etc.
From the above, as Fig. 4 illustrate, when the first wave length light source group 122 of light source module 120 is lit, between the first electrode 112a on first substrate 112 and the second electrode 112b, there is a transverse electric field E1, to drive display medium 116.When the second wave length light source group 124 of light source module 120 is lit, between the 3rd electrode 114a on second substrate 114 and the 4th electrode 114b, there is another transverse electric field E2, to drive display medium 116.That is, in the present embodiment, the direction of electric field is mainly distributed in parallel first substrate 112 with on the direction of second substrate 114, and due to electrode separation d1, d2 not identical, the size of transverse electric field E1, E2 of generation is not identical yet.
Second embodiment
Fig. 5 is the schematic perspective view of the display panel according to one embodiment of the invention.Display panel 200 has at least one first pixel cell 220, at least one second pixel cell 240 and at least one 3rd pixel cell 260.In Figure 5, be comprise first pixel cell 220, second pixel cell 240 for display panel 200 and the 3rd pixel cell 260 is described, but the present invention does not limit the quantity of the first pixel cell 220, second pixel cell 240 and the 3rd pixel cell 260.Wherein the first pixel cell 220, second pixel cell 240 and the 3rd pixel cell 260 comprise first substrate 222, second substrate 224, chromatic filter layer 226 and a display medium 228 respectively.
Aforesaid first substrate 222 has multiple first electrode 222a of setting alternating with each other and multiple second electrode 222b, wherein between each the first electrode 222a and second adjacent electrode 222b, there is first-class pitch spacing d3.Second substrate 224 is positioned at the subtend of first substrate 222, and chromatic filter layer 226 is positioned on first substrate 222 or second substrate 224.In the present embodiment, be for chromatic filter layer 226 on second substrate 224, but chromatic filter layer 226 also can be situated on first substrate 222.
Display medium 228 is between first substrate 222 and second substrate 224.Wherein, between the first electrode 222a of the first pixel cell 220 and the second electrode 222b etc. between the first electrode 222a of pitch spacing d3 and the second pixel cell 240 and the second electrode 222b etc. pitch spacing d4 unequal.
Between first electrode 222a and the second electrode 222b etc. pitch spacing d3 can affect electric field level between two electrode 222a and 222b.Owing to waiting pitch spacing d3 and waiting pitch spacing d4 and unequal, so when corresponding to the first pixel cell 220 and being driven respectively with the first electrode 222a and the second electrode 222b that correspond to the second pixel cell 240, both meetings produce the electric field varied in size.In the present embodiment, utilize the different pixel cell 220,240,260 of different electric field driven, display panel 200 when applying single voltage can be improved and produce the problem of penetration reduction, and the colour cast situation produced when avoiding high voltage.
Fig. 6 is the pixel circuit schematic diagram of the display panel of Fig. 5.The pixel circuit of the present embodiment is similar to the pixel circuit of the embodiment of Fig. 1, therefore adopts identical label to represent same or analogous element.Specifically, the first electrode 222a and a transistor T of the present embodiment are electrically connected, the second electrode 222b be electrically connected with electrode wires CL altogether.One end of transistor T connects with sweep trace SL, and the other end connects with data line DL.At this, whether transistor T can write the on-off element of the first electrode 222a as voltage information.For example, when transistor T be unlocked make voltage information write the first electrode 222a time, first electrode 222a is applied in a voltage, and its magnitude of voltage is different from the magnitude of voltage of common electrode line CL, makes to have voltage difference between the first electrode 222a and the second electrode 222b.Now, between the first electrode 222a and the second electrode 222b, produce an electric field, to drive display medium 228.
Refer again to Fig. 5, position has a red filter pattern 226a, a blue filter pattern 226b and a green filter pattern 226c at the chromatic filter layer 226 of second substrate 224, is respectively a red pixel cell 220a, a green pixel cell 240a and a blue pixel cell 260a to make the first pixel cell 220, second pixel cell 240 and the 3rd pixel cell 260.In other words, the present embodiment is for colorized optical filtering (Color filter, CF) substrate is described for second substrate 224.As aforementioned, chromatic filter layer 226 also can with the first electrode 222a and the second common position of electrode 222b on first substrate 222, now first substrate 222 can be that colorized optical filtering is integrated in (Color filter on Array on thin film transistor (TFT) array, COA) substrate, or thin film transistor (TFT) array is integrated in (Array on Colorfilter, AOC) substrate on chromatic filter layer 226.But the present invention is not limited with above-mentioned.
In the present embodiment, between the first electrode 222a of red pixel cell 220a and the second electrode 222b etc. pitch spacing d3 be less than between the first electrode 222a of green pixel cell 240a and the second electrode 222b etc. pitch spacing d4.In other words, in the present embodiment, to wait the first electrode 222a that pitch spacing d3 is less with the second electrode 222b to the red pixel cell 220a driving wavelength longer, and with wait pitch spacing d4 the first larger electrode 222a and the second electrode 222b to drive wavelength secondary green pixel cell 240a.
In addition, between the first electrode 222a of green pixel cell 240a and the second electrode 222b etc. pitch spacing d4 be less than between the first electrode 222a of blue pixel cell 260a and the second electrode 222b etc. pitch spacing d5.In other words, correspond between the first electrode 222a of red pixel cell 220a and the second electrode 222b etc. pitch spacing d3 be less than correspond between the first electrode 222a of green pixel electrode and the second electrode 222b etc. pitch spacing d4, and correspond between the first electrode 222a of green pixel cell 240a and the second electrode 222b etc. pitch spacing d4 be less than between the first electrode 222a of blue pixel cell 260a and the second electrode 222b etc. pitch spacing d5.That is, the pitch spacing d4 such as wait that pitch spacing d5 is greater than, and the pitch spacing d3 such as wait that pitch spacing d4 is greater than.
Hold above-mentioned, this is not limited to waiting relation of pitch spacing d5 Deng pitch spacing d4, in the embodiment that another does not illustrate, between the first electrode 222a of green pixel cell 240a and the second electrode 222b etc. pitch spacing d4 be equal between the first electrode 222a of blue pixel cell 260a and the second electrode 222b etc. pitch spacing d5.In addition, the red pixel cell 220a of the first pixel cell 220() the first electrode 222a and the second electrode 222b between wait pitch spacing d3 and the second pixel cell 240(green pixel cell 240a) the first electrode 222a and the second electrode 222b between etc. difference between pitch spacing d4 be more than or equal to 0.2 micron; In another embodiment, wait pitch spacing d3 and etc. the difference between pitch spacing d4 be more than or equal to 0.5 micron, and be less than or equal to 5 microns; In preferred embodiment, wait pitch spacing d3 and etc. the difference between pitch spacing d4 be more than or equal to 0.8 micron, and be less than or equal to 1.5 microns, such as wait pitch spacing d3 and etc. the difference between pitch spacing d4 be about 1 micron.
Refer again to Fig. 5, in the present embodiment, be all example with the first electrode 222a and the live width w1 phase of the second electrode 222b, but the live width w1 of the first electrode 222a and the second electrode 222b also can be incomplete same.For example, can the live width of the first electrode 222a of part wider, or be that the second electrode 222b live width of part is wider, being familiar with person skilled in art can make design alteration to each electrode live width, with demand during realistic application.
Fig. 7 is the part sectioned view of the display panel of Fig. 5.As in Fig. 7 illustrate, the first electrode 222a and the second electrode 222b is disposed alternately on first substrate 222, and the first electrode 222a and the second electrode 222b be position at grade.In other words, the present embodiment is that copline switches (In-PlaneSwitching with display panel, IPS) display panel of formula is that example is described, and when having a transverse electric field E3 between the first electrode 222a and the second electrode 222b, can drive display medium 228.
In addition, in the present embodiment, display medium 228 is had the tropisms such as optics (optically isotropic) when not bestowing an electric field.According to the present embodiment, above-mentioned display medium 228 comprises blue phase liquid crystal, and it is such as that polymer stabilizing type blue phase liquid crystal (polymer-stabilized blue phase liquidcrystals) or polymer stabilizing type etc. are to phase liquid crystal (polymer-stabilized isotropicphase liquid crystals) etc.In the present embodiment, display medium 228 is through the formation of electric field and drives, and display medium 228 is changed, with the effect making display medium 228 play light valve between tropism and optical anisotropy at optics etc.
Fig. 8 is the driving voltage-penetrance curve map (V-T curves) of the display device of Fig. 1.Please refer to Fig. 8, when curve A in Fig. 8, curve B, curve C are first wave length light source group 122 respectively, second wave length light source group 124, three-wavelength source group 126 are lit, drive the driving voltage of display medium and the relation curve of penetrance with identical electrodes spacing.Can be found out by the curve map of Fig. 8, during with identical electrodes spacing driving display medium, the obvious curve of deviation B of curve A and curve C.And if under identical penetrance, the driving voltage of curve A is apparently higher than curve B and curve C.
Then please refer to curve D, curve D is first wave length light source group 122 when being lit, and changes with the driving voltage of electrode drive display medium of less electrode separation and the relation curve of penetrance.Curve A and curve D being compared, can finding out that curve D can be more consistent with curve B and curve C when changing with the electrode drive display medium that electrode separation is less.Therefore, can be understood with comparing of curve D by the curve A in Fig. 8, adopt different electrode separations to change the electric field intensity of electrode, effectively can adjust the relation of driving voltage and penetrance, and can penetrance be increased, avoid producing colour cast problem when high driving voltage.
From the above, in the embodiment in figure 1, be the first electrode 112a and the second electrode 112b to drive first wave length light source group 122, and utilize the 3rd electrode 114a and the 4th electrode 114b to drive secondary light source set of wavelengths 124.Because the first spacing d1 between the first electrode 112a and the second electrode 112b is less than the second spacing d2 between the 3rd electrode 114a and the 4th electrode 114b, so can improve by this and adjust the situation of the colour cast when high driving voltage.
In sum, in display device of the present invention, utilize spacing between Different electrodes group different, to produce the electric field of different size, and with the different light source group of the electric field driven of different size, with the problem of the penetrance and colour cast of improving display device.In addition, in display panel of the present invention, utilize the spacing between Different electrodes group different, to produce the electric field of different size, and with the different pixel cell of the electric field driven of different size, the penetrance improving display panel can be reached equally and improve the effect of colour cast problem.
Although the present invention discloses as above with embodiment; so itself and be not used to limit the present invention; have in any art and usually know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
Claims (12)
1. a display device, comprising:
One display panel, comprising:
One first substrate, this first substrate has multiple first electrode of setting alternating with each other and multiple second electrode, wherein has one first spacing between each first electrode and this adjacent second electrode;
One second substrate, be positioned at the subtend of this first substrate, this second substrate has multiple 3rd electrode of setting alternating with each other and multiple 4th electrode, wherein between each the 3rd electrode and the 4th adjacent electrode, there is one second spacing, and this second spacing and this first spacing unequal; And
One display medium, between this first substrate and this second substrate;
One light source module, is positioned at the side of this display panel, and this light source module comprises a first wave length light source group, a second wave length light source group and a three-wavelength source group, and this first, second and three-wavelength source group sequentially light,
Wherein, when this first wave length light source group of this light source module is lit, drive this display medium by described first electrode on this first substrate and described second electrode, and
When this second wave length light source group of this light source module is lit, drive this display medium by described 3rd electrode on this second substrate and described 4th electrode.
2. display device according to claim 1, it is characterized in that, when this three-wavelength source group of this light source module is lit, drives this display medium by described first electrode on this first substrate and described second electrode or drive this display medium by described 3rd electrode on this second substrate and described 4th electrode.
3. display device according to claim 1, is characterized in that, the wavelength of described first wave length light source group is greater than the wavelength of described second wave length light source group, and the wavelength of described second wave length light source group is greater than the wavelength of described three-wavelength source group.
4. display device according to claim 3, is characterized in that, this first spacing between each first electrode and this adjacent second electrode is less than this second spacing between each the 3rd electrode and the 4th adjacent electrode.
5. display device according to claim 1, is characterized in that, the difference between this first spacing and this second spacing is more than or equal to 0.2 micron.
6. display device according to claim 1, is characterized in that, the difference between this first spacing and this second spacing is more than or equal to 0.5 micron, and is less than or equal to 5.0 microns.
7. display device according to claim 1, is characterized in that, the difference between this first spacing and this second spacing is more than or equal to 0.8 micron, and is less than or equal to 1.5 microns.
8. display device according to claim 1, is characterized in that, the live width of described first electrode is identical with the live width of described second electrode.
9. display device according to claim 1, is characterized in that, the live width of described first electrode and the live width of described second electrode incomplete same.
10. display device according to claim 1, it is characterized in that, when this first wave length light source group of this light source module is lit, between described first electrode on this first substrate and described second electrode, there is a transverse electric field, to drive this display medium, and
When this second wave length light source group of this light source module is lit, between described 3rd electrode on this second substrate and described 4th electrode, there is a transverse electric field, to drive this display medium.
11. display device according to claim 1, is characterized in that, this display medium is had the tropisms such as optics when not bestowing an electric field.
12. display device according to claim 1, is characterized in that, this first spacing and this second spacing are respectively first-class pitch spacing.
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| TW101130108 | 2012-08-20 | ||
| TW101130108A TWI473067B (en) | 2012-08-20 | 2012-08-20 | Display apparatus and display panel |
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| CN201510049629.XA Division CN104570516A (en) | 2012-08-20 | 2012-10-12 | Display device and display panel |
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| CN102866546A CN102866546A (en) | 2013-01-09 |
| CN102866546B true CN102866546B (en) | 2015-06-10 |
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| CN201210385712.0A Expired - Fee Related CN102866546B (en) | 2012-08-20 | 2012-10-12 | Display device and display panel |
| CN201510049629.XA Pending CN104570516A (en) | 2012-08-20 | 2012-10-12 | Display device and display panel |
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| TWI489184B (en) * | 2012-07-26 | 2015-06-21 | Au Optronics Corp | Liquid crystal display panel |
| CN103472636A (en) | 2013-09-06 | 2013-12-25 | 京东方科技集团股份有限公司 | Liquid crystal display panel, driving method thereof and display device |
| TWI569062B (en) * | 2016-03-08 | 2017-02-01 | 友達光電股份有限公司 | Display device, operating method of display device, and pixel circuit of display device |
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| KR100531928B1 (en) * | 2002-04-19 | 2005-11-28 | 가부시끼가이샤 도시바 | A liquid crystal display |
| KR20080021381A (en) * | 2006-09-04 | 2008-03-07 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display |
| EP2077466A1 (en) * | 2008-01-07 | 2009-07-08 | TPO Displays Corp. | Electrode structure for an LCD device |
| CN102656511A (en) * | 2010-02-17 | 2012-09-05 | 株式会社东芝 | Liquid crystal display device |
| CN101943829B (en) * | 2010-08-11 | 2012-05-16 | 昆山龙腾光电有限公司 | In-plane switching liquid crystal display panel and liquid crystal display |
| CN103176315A (en) * | 2011-12-20 | 2013-06-26 | 群康科技(深圳)有限公司 | Display device and electronic device |
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- 2012-08-20 TW TW101130108A patent/TWI473067B/en not_active IP Right Cessation
- 2012-10-12 CN CN201210385712.0A patent/CN102866546B/en not_active Expired - Fee Related
- 2012-10-12 CN CN201510049629.XA patent/CN104570516A/en active Pending
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| TW583478B (en) * | 1999-10-21 | 2004-04-11 | Matsushita Electric Ind Co Ltd | Liquid crystal display unit |
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| CN101718928A (en) * | 2009-12-29 | 2010-06-02 | 友达光电股份有限公司 | Electrode structure, display panel and dsiplay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102866546A (en) | 2013-01-09 |
| TWI473067B (en) | 2015-02-11 |
| CN104570516A (en) | 2015-04-29 |
| TW201409452A (en) | 2014-03-01 |
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