CN106383413B - With the display panel for stablizing visual angle sustainment rate - Google Patents
With the display panel for stablizing visual angle sustainment rate Download PDFInfo
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- CN106383413B CN106383413B CN201510465192.8A CN201510465192A CN106383413B CN 106383413 B CN106383413 B CN 106383413B CN 201510465192 A CN201510465192 A CN 201510465192A CN 106383413 B CN106383413 B CN 106383413B
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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
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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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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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
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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
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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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
- G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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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
- G02F1/137—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
- G02F1/139—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 based on orientation effects in which the liquid crystal remains transparent
- G02F1/1393—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 based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
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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
- G02F2203/00—Function characteristic
- G02F2203/30—Gray scale
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The present invention disclose it is a kind of with the display panel for stablizing visual angle sustainment rate, including first substrate, the second substrate, the liquid crystal layer between the first, second substrate.First substrate includes the scan line being set in first base material and data line, and the two is staggered and defines an at least pixel region, an electrode in pixel region includes two extensions and a bending section, and two extensions connect two extensions substantially parallel to data line extending direction, bending section.One light generates the bending section of one first dark line counter electrode, two extensions corresponding with multiple second dark lines by pixel region.Wherein in the first gray value, the first dark line has the first dark line width, in the second gray value, the first dark line has the second dark line width, the ratio of first dark line width and the second dark line width is between 2.1~3.0, wherein the first gray value is the half of the display panel whole gray value, and the second gray value is the highest gray value of display panel.
Description
Technical field
The present invention relates to a kind of display panels, and more particularly to a kind of display panel with preferable display quality.
Background technique
Though the electronic product with display panel be modern work disposal in study or personal amusement and recreation
On, indispensable necessity, including smartphone (SmartPhone), tablet computer (Pad), notebook computer
(Notebook), display (Monitor) arrives many Related products such as TV (TV).It is wherein again the most general with liquid crystal display panel
Time.
Liquid crystal display panel (LCD) is to be rotated using voltage driving liquid crystal (LCs) and then adjust brightness/gray scale and may make up
A kind of flat-panel screens, electronic visual display and video display.Since liquid crystal display panel applies upper tool in the overwhelming majority
Have it is more succinct, slimmer and more graceful, can carry, more at a low price, more high-reliability and allow the more comfortable function of eyes, widely take
In generation cathode-ray tube display (CRT), become most widely used display, at the same provide diversity include size, shape,
The multiple choices such as resolution ratio.However, display device production when may due in manufacture craft it is slight make a variation but influence it is aobvious
The display quality of showing device.Therefore it should be noted the details in manufacture craft in production, and in view of display device obtained is
It is no to have moderately good characteristic electron and meet the specifications of product requirement, such as meet high yield, good reliable
The requirements such as degree and display quality are stable, are influenced without being made a variation by manufacture craft.
Summary of the invention
The purpose of the present invention is to provide it is a kind of improve display quality display panel, make display device can be less susceptible to by
Manufacture craft variation influences.
In order to achieve the above object, an embodiment according to the present invention, proposes a kind of display panel, including a first substrate, one
Two substrates, the liquid crystal layer between first substrate and the second substrate.First substrate includes being set in a first base material
Scan line and data line, and data line and scan line are staggered and define an at least pixel region, include in the pixel region
One electrode, including two extensions and a bending section, extending direction of two extensions substantially parallel to data line, and bending section
Between two extensions and connect the extension.Wherein, a light generates one first dark line and more second by pixel region
Dark line, the bending section of the first dark line counter electrode and the extending direction of first dark line are parallel to scan line, and the second dark line is then right
Answer two extensions.Wherein, in first gray value, the first dark line has the first dark line width, in second gray value the
One dark line has the second dark line width, and the ratio of the first dark line width and the second dark line width is between 2.1~3.0, wherein first
Gray value is the half of display panel whole gray value, and the second gray value is the highest gray value of display panel.
More preferably understand to have to above-mentioned and other aspect of the invention, special embodiment below, and appended by cooperation
Attached drawing is described in detail below:
Detailed description of the invention
Figure 1A is that the fringe field of one embodiment of the invention converts (Fringe Filed Switching, FFS) display mould
The top view of the liquid crystal display panel of formula；
Figure 1B is the liquid crystal display panel diagrammatic cross-section in Figure 1A along 1A-1A line segment, is top pixel electrode shape
State；
Fig. 2 is the section signal that the fringe field of another embodiment of the present invention converts the liquid crystal display panel of display pattern
Figure is bottom pixel electrode shape；
Fig. 3 A is the schematic diagram of the single pixel region of one embodiment of the invention；
Fig. 3 B is the generated dark line schematic diagram when a light is by pixel region as shown in Figure 3A；
Fig. 4 is the relational graph of different gray values and the dark line width of the first dark line generated in a display panel；
Fig. 5 is dark line width ratio in one embodiment of the invention, the visual angle uniformity of intermediate grey values, highest gray value
The relational graph of the visual angle uniformity and visual angle sustainment rate；
Fig. 6 is tri- color sub-pixel of RGB dark line width corresponding to different gray values of display panel in an embodiment
Schematic diagram；
Fig. 7 is that can produce Liquid Crystal Molecules Alignment mode corresponding to the different dark line width ratios such as height, moderate, minuent
Schematic diagram；
Fig. 8 is the dark line figure of the single pixel region of multiple groups difference dark line width ratio；
Fig. 9 is that can produce pixel electrode shape and liquid crystal molecule corresponding to higher and more low different dark line width ratios
The schematic diagram of arrangement mode；
Figure 10 is the single pixel region dark line figure of two groups of difference dark line width ratios；
Figure 11 A, Figure 11 B, Figure 11 C are respectively that liquid crystal generates expansion (splay), torsion (twist) and bending (bend)
Deng the schematic diagram of three kinds of deformed states；
Figure 12 is the single pixel region dark line figure of two groups of difference dark line width ratios；
Figure 13 is the curve graph of gray value corresponding to distance d in (1) of Figure 12.
Symbol description
S1: first substrate
S2: the second substrate
110: first base material
PX: pixel region
113: active layers
120G: grid
121: the first insulating layers
122: second insulating layer
124,125,129: via hole
127: third insulating layer
128: the four insulating layers
DE: source electrode
131: the first transparency conducting layers
132: the second transparency conducting layers
134,331: slit
133: both alignment layers
132E, 330E: the extension of electrode
132B, 330B: the bending section of electrode
SL: scan line
DL: data line
DDL: the extending direction of data line
θDL: the extension of electrode and the angle of scan line
DF1: the first dark line
DDF1: the extending direction of the first dark line
W1: the first dark line width
DF2: the second dark line
DDF2: the extending direction of the second dark line
θDF: the angle of the second dark line and X-direction
W2: the second dark line width
L: pixel total length
LC: liquid crystal layer
Specific embodiment
The embodiment of the present invention proposes the display panel of a preferred display quality, by adjusting corresponding to different gray values
The ratio of dark line width designs, and can reach display device and stablizes and be not easily susceptible to the visual angle maintenance that manufacture craft variation influences
Rate.Furthermore the display panel of embodiment also may conform to the demand of the good aperture opening ratio of application product.Therefore, according to embodiment institute
The design of proposition, can be improved product yield, has display panel obtained and stablizes excellent display quality.
Describe wherein several groups of state sample implementations of the invention in detail referring to appended attached drawing.It is noted that embodiment
The structure and content of the multiple groups state sample implementation proposed are used by way of example only, and the range to be protected of the present invention is not limited only to
Those described aspects.It is noted that the present invention not shows all possible embodiment, relevant art can not take off
The structure of embodiment is changed and modified from the spirit and scope of the present invention, to meet needed for practical application.Therefore, not
It may also can be applied in other state sample implementations proposed by the present invention.Furthermore attached drawing, which has simplified, clearly illustrates embodiment with benefit
Content, the dimension scale on attached drawing are not drawn according to actual product equal proportion.Therefore, specification and diagramatic content are only described herein
Embodiment is used, rather than is used as the scope of the present invention is limited.Furthermore same or similar label is to mark in embodiment
Show same or similar part.
Furthermore the word of ordinal number such as " first ", " second ", " third " etc. used in specification and claim,
To modify the element of claims, itself and unexpectedly contain and represent the request element have it is any before ordinal number, also do not represent certain
The sequence or the sequence in manufacturing method of one request element and another request element, the use of those ordinal numbers are only used to make to have
The request element for having certain to name is able to that clear differentiation can be made with another request element with identical name.
The embodiment of the present invention is, for example, to be applied to fringe field conversion (Fringe Filed Switching, FFS)
The liquid crystal display panel of display pattern.Figure 1A is that the fringe field of one embodiment of the invention converts (Fringe Filed
Switching, FFS) display pattern liquid crystal display panel top view.Figure 1B is the liquid crystal in Figure 1A along 1B-1B line segment
Display panel diagrammatic cross-section.One display panel includes that a first substrate S1 and first substrate S1 are oppositely arranged a second substrate
The S2 and liquid crystal layer LC being set between first substrate S1 and the second substrate S2.This embodiment is with top pixel electrode (top
Pixel electrode) form structure of liquid crystal display panel for explain, but the present invention not in the form of such and is painted
Thin portion structure be limited.
In one embodiment, as shown in Figure 1A, first substrate S1 includes first base material 110 and is formed in first base material 110
The multi-strip scanning line SL being staggered and multiple data lines DL, and depending on adjacent two data line and grid line scan line SL interlock
Justice goes out a pixel region PX.Other elements are omitted in the second substrate S2.
It include: thin film transistor (TFT) (TFT) as shown in Figure 1A, Figure 1B, in pixel region PX for example including with low temperature polycrystalline silicon
Manufactured active layers 113 are formed on first substrate 110, one first insulating layer 121 covering active layers 113, bigrid 120G and
One second insulating layer 122 covers bigrid 120G.Wherein, thin film transistor (TFT) is positioned adjacent in scan line SL's and data line DL
Staggered place is the switch element to control pixel region PX and be electrically connected with data line DL.Furthermore in second insulating layer
There is via hole (via) 124 and 125, metal material is filled in via hole (via) 124 and 125, to be respectively formed number in 122
According to source electrode (source electrode) DE of line DL and thin film transistor (TFT), therefore data line DL can be via via hole 124
It is electrically connected with active layers 113, source electrode DE can be electrically connected via via hole 125 with active layers 113.Furthermore a third insulate
Layer 127 covers second insulating layer 122, data line DL and source electrode DE.It further include one first transparent above third insulating layer 127
Conductive layer 131 (not coming across in Figure 1A), one second transparency conducting layer 132 are located at 131 top of the first transparency conducting layer, one the 4th
Insulating layer 128 between the first transparency conducting layer 131 and the second transparency conducting layer 132 and a both alignment layers 133 covering this second thoroughly
Bright conductive layer 132.Embodiment as shown in Figure 1B is to be electrically connected with the second transparency conducting layer 132 being located above with data line DL
It connects, the second transparency conducting layer 132 for being now placed in top is pixel electrode, and the first transparency conducting layer 131 of lower section is common electricity
Pole, structure as shown in Figure 1B are also known as the liquid crystal display panel of top pixel electrode (top pixel electrode) form
Structure, therefore as shown in Figure 1B, a via hole (via) 129 through the 4th insulating layer 128 (be located at the first transparency conducting layer 131 with
Between second transparency conducting layer 132) and third insulating layer 127 (between TFT and the first transparency conducting layer 131) to expose
Source electrode DE, the material of the second transparency conducting layer 132 are filled in via hole 129 to connect source electrode DE, are passed through actively
Layer 113 and then electrical connection data line DL.
In one embodiment, the first insulating layer 121, second insulating layer 122, the 4th insulating layer 128 can insulate for inorganic material
Layer, can be selected identical or different inorganic material, e.g. SiOxOr SiNxOr other applicable materials.Third insulation
Layer 127 can be organic material insulating layer, e.g. the (tetrafluoroethene-perfluorinated alkoxy vinyl ether copolymerization of fluoroalkyl compound
Object, Polyfluoroalkoxy, PFA), as a planarization layer of isolation TFT and the first transparency conducting layer 131；In other realities
Apply in example, third insulating layer 127 can also be colorized optical filtering layer material, at this time as chromatic filter layer with thin film transistor (TFT) TFT
In the embodiment of (Color filter on array, COA) on same substrate.However the present invention is not limited thereto.Also optional
Third insulating layer 127 is made with other organic materials or inorganic material or combinations thereof.In one embodiment, the first transparency conducting layer
131 and second transparency conducting layer 132 for example at a distance of about 50nm~about 700nm.In one embodiment, it is transparent such as to completely cut off TFT and first
The third insulating layer 127 of conductive layer 131 is an organic insulator, the first transparency conducting layer 131 and the second transparency conducting layer 132
In this way at a distance of about 300nm~about 700nm；For example, about 500nm.In another embodiment, such as completely cut off TFT and the first transparency conducting layer
131 third insulating layer 127 is an inorganic insulation layer, and the first transparency conducting layer 131 and the second transparency conducting layer 132 are, for example, phase
Away from about 50nm~about 300nm；Such as at a distance of about 150nm~about 200nm.However those numerical value are by way of example only, not to
The applicable range of the limitation present invention.
In addition, the electrode that embodiment proposes includes that multiple electrodes branch (branches) and slit (slits) are each positioned at electricity
Between the branch of pole, as shown in Figure 1A, Figure 1B, the second transparency conducting layer 132 (electrode) has multiple slits (slits) 134, slit
Direction of 134 extending direction substantially parallel to data line DL.In one embodiment, slit 134 is, for example, (but not limiting)
Respectively have width between 1.5 μm~4 μ ms.In one embodiment, electrode branch is, for example, that (but not limiting) respectively has width
Degree is between 1.5 μm~4 μ ms.In addition, the first transparency conducting layer 131 as shown in Figure 1B can not have slit (such as Figure 1B institute
Show) or there is slit, the present invention is not intended to limit this.
Furthermore in certain embodiments, the thin film transistor (TFT) of display panel is, for example, top grid as shown in Figure 1B
(top-gate) structure.In further embodiments, the thin film transistor (TFT) of display panel is also possible to bottom grid (bottom-
Gate) structure.Whether top grid (top-gate) structure or bottom grid (bottom-gate) structure, are all this hairs
Bright applicable state sample implementation.
Fig. 2 is that the fringe field of another embodiment of the present invention converts (Fringe Filed Switching, FFS) display mould
The diagrammatic cross-section of the liquid crystal display panel of formula is top common electrode (top common electrode) form.Fig. 2 with
Similar elements same reference numerals in Figure 1A, and component details please refer to above-mentioned, details are not described herein.Unlike Figure 1B,
It is to be electrically connected with underlying first transparency conducting layer 131 with data line DL in Fig. 2, be now placed in top second is transparent
Conductive layer 132 is common electrode, and the first transparency conducting layer 131 of lower section is pixel electrode, and structure as shown in Figure 2 is also known as
The structure of liquid crystal display panel of top common electrode (top common electrode) form, the second of top is transparent at this time leads
Electric layer 132 has slit 134, and the first transparency conducting layer 131 can have slit or not have slit.Therefore such as Fig. 2
Shown in via hole (via) 129 be through third insulating layer 127, third insulating layer 127 is located at the source electrode of thin film transistor (TFT)
Between DE and the first transparency conducting layer 131, and source electrode DE, the material of the second transparency conducting layer 132 are exposed in via hole 129
Material is filled in via hole 129 to connect source electrode DE, is electrically connected data line DL by active layers 113.
It is usually produced in a pixel region PX in the liquid crystal display panel of general fringe field conversion (FFS) display pattern
Raw two kens (domains) up and down, and the electrode shape of pixel region PX also cooperates more kens and has corresponding design, such as schemes
> font shown in 1A.Explained so that a pixel region has two kens up and down as an example below (but application of the invention is not limited to
This), and electrode then correspondingly includes a two extension 132E and bending section 132B, and bending section 132B is located at two extensions
Between 132E and connect two extension 132E.In the top pixel electrode embodiment of Figure 1B, second in pixel region PX is saturating
Bright conductive layer 132 is electrically connected with TFT.The first electrically conducting transparent in the top common electrode embodiment of Fig. 2, in pixel region PX
Layer 131 is electrically connected with TFT, and bending section and extension are the pattern definition being located within the scope of pixel region PX with common electrode
Bending section and extension.
A, Fig. 3 B referring to figure 3..Fig. 3 A is painted the schematic diagram of the single pixel region of one embodiment of the invention, wherein pixel
Electrode in the PX of region includes two extension 330E, a bending section 330B and two slits 331, and two extension 330E are substantial
It is parallel to the extending direction of data line DL, and bending section 330B between two extension 330E and connects two extension 330E.
In embodiment illustrated, scan line SL is straight line wiring configuration and the parallel X-direction of its extending direction, and data line DL is not and scanning
Line SL is vertical, but generally has a substantial extending direction (Y-direction).But the data line of part, such as exist in figure 3 a
The direction D indicated on XY axes of coordinatesDL, it is in an angle theta with scan line (X-direction)DL.In certain other embodiments, scan line SL
It can also be non-rectilinear wiring configuration, but generally still there is a substantial extending direction (X-direction).In one embodiment, electrode
Two extension 330E and scan line SL there is an angle, which is substantially equal to angle thetaDLAnd between 80~87 degree of ranges,
Such as 84 degree, but the present invention is not limited with this aspect and angular range.The angle theta of two extension 330E and scan line SLDL?
It can not be identical.
Fig. 3 B is painted the generated dark line schematic diagram when a light is by pixel region as shown in Figure 3A.Light passes through
One first dark line (dark fringe) DF1 and more second dark line DF2 is generated when pixel region, the first dark line DF1 counter electrode
Bending section 330B, and extending direction (the direction D indicated on XY axes of coordinates in such as Fig. 3 B of the first dark line DF1DF1, parallel X
Direction) substantially parallel to scan line SL, two extension 330E of those the second dark line DF2 counter electrodes, and the second dark line
Extending direction (the direction D indicated on XY axes of coordinates in such as Fig. 3 B of DF2DF2, it is in an angle theta with X-directionDF) substantially flat
Row is in two extension 330E.
In addition, that is, its extending direction is, for example, as shown in Figure 3B as the first dark line DF1 that light is generated by pixel region
It is parallel to scan line SL (X-direction), dark line width reduces (dark line width attenuates) with the raising of gray value.Fig. 4 is one aobvious
Show the relational graph of different gray values and the dark line width of the first dark line generated in panel.There is 0~255 gray value (all
Gray value be 256 gray scales) a display panel for, the dark line for comparing highest gray value 255 and intermediate grey values 128 is wide
Degree finds that the dark line width (such as 4 units) of the first dark line DF1 of intermediate grey values 128 is the first of highest gray value 255
2.6 times of the dark line width (such as 1.54 units) of dark line DF1.It in the present invention, is that research dark line width and visual angle are uniform
Relationship between degree and visual angle sustainment rate designs by adjusting the ratio of dark line width corresponding to different gray values, makes to show
Showing device, which can reach, stablizes and is not easily susceptible to the preferable visual angle sustainment rate that manufacture craft variation influences.
The visual angle uniformity of display panel, can be defined as follows:
In z-axis angle theta=60 degree and trunnion axis angleUnder brightness (luminance) divided by z-axis angle theta=
60 degree and trunnion axis angleUnder brightness.Wherein, brightness (luminance) refers to that a light source unit is single in given directions
The luminous flux issued in plane product unit solid angle.Therefore, the visual angle uniformity can be indicated simply with formula (1):
The visual angle sustainment rate of display panel, then may be defined as:
The visual angle uniformity/highest gray value visual angle uniformity of intermediate grey values.
Wherein, intermediate grey values and highest gray value are depending on the specification of the display panel of practical application, middle gray
Value is usually the half of whole gray values.For example, highest gray value is if its gray value of display panel of application is 0~63
63, whole gray values are 64 gray scales, then intermediate grey values are 32.If its gray value of display panel of application is 0~255,
Highest gray value is 255, and whole gray values are 256 gray scales, then intermediate grey values are 128.If its ash of the display panel of application
Angle value is 0~1023, then highest gray value is 1023, and whole gray values are 1024 gray scales, then intermediate grey values are 512.
Therefore, for gray value is 0~255 display panel embodiment, the visual angle sustainment rate of display panel then may be used
It is indicated with formula (2):
The visual angle uniformity of 128 gray values/255 gray values visual angle uniformity ... (2)
Referring to figure 5., be painted dark line width ratio in one embodiment of the invention, the visual angle uniformity of intermediate grey values,
The visual angle uniformity of highest gray value and the relational graph of visual angle sustainment rate.Wherein, dark line width ratio is intermediate grey values (example
As 128) dark line width divided by highest gray value (such as 255) dark line width, left side y-axis coordinate values be intermediate grey values and
The visual angle uniformity of highest gray value, and the right y-axis coordinate is then visual angle sustainment rate (both intermediate grey values and highest gray value
The visual angle uniformity be divided by).As shown in figure 5, the amplitude of variation of visual angle sustainment rate is very big when dark line width ratio is less than 2.1；
And in dark line width ratio after being greater than 2.1, such as when between about 2.1~about 3.0, visual angle sustainment rate then remains stable.Therefore,
It is greater than in dark line width ratio 2.1 for example between about 2.1~about 3.0 section, is be not readily susceptible to manufacture craft influence steady
Determine section.And dark line width ratio is higher, the aperture opening ratio of the pixel is lower, therefore the upper limit selection of dark line width ratio can root
Consider according to the aperture opening ratio of actual pixels, such as when dark line width ratio is greater than 3.0, dark line is wide, the opening of pixel
Rate is relatively low, therefore may be selected about 3.0 is upper limit value.
In addition, for the display panel with chromatic filter layer, by taking tri- color sub-pixel of RGB as an example, since human eye is for green
Color is most sharp, and it is maximum that green sub-pixel influences pixel penetrance, therefore in application design wishes that green sub-pixel can be improved
Penetrance.And penetrance can be by dark line widths affect, dark line width is narrower, and to face penetrance higher.Fig. 6 is painted an embodiment
Tri- color sub-pixel of RGB dark line width corresponding to different gray values of middle display panel.Make using embodiments of the present invention
Intermediate dark line width (first dark line DF1 width) of the green sub-pixel in highest gray value reduces, to obtain maximum brightness,
And then improve its penetrance.Therefore, in one embodiment, when light generates dark line by pixel region PX, such as earlier figures 3A, figure
When the first dark line DF1 and the second dark line DF2, pixel region PX of 3B is green sub-pixel, the first dark line in highest gray value
With the first green dark line width, when pixel region PX is red sub-pixel, in highest gray value, the first dark line has first
Red dark line width, when pixel region PX is blue sub-pixels, in highest gray value, the first dark line has the first blue dark line
Width, wherein for the first green dark line width less than the first red dark line width, the first green dark line width is dark less than the first blue
Line width.
The ratio (such as 2.1~3.0) of 3 kinds set forth below the first dark line width that can reach embodiment and the second dark line width
Technological means for explain, but the present invention is not limited to using those content details, other achievable embodiments mention
The technological means of the first, second dark line width ratio out can also be applied.
<dark line width ratio is controlled with the Exposure mode of photo-alignment layer>
Present invention can apply to the display panel with photo-alignment layer (photo alignment), for example, it is transparent first
The light that e.g. polyimides (polyimide, PI) is constituted is respectively formed on conductive layer 131 and the second transparency conducting layer 132
Both alignment layers irradiate photo-alignment layer with UV light to determine the alignment direction of photo-alignment layer.In embodiment, applicable one of which skill
Art means are that dark line width corresponding to highest gray value and intermediate grey values is controlled using the Exposure mode to photo-alignment layer,
To reach dark line width ratio appropriate, (the dark line width of intermediate grey values (ex:128) is divided by highest gray value (ex:255)
Dark line width), the dark line width ratio greater than 2.1 (ex: between about 2.1~about 3.0) as discussed above makes visual angle sustainment rate
It maintains to stablize and be not easily susceptible to manufacture craft influence.
Fig. 7 is please referred to, the different dark line width such as can generate height, moderate, minuent because of different alignment direction are painted
Liquid Crystal Molecules Alignment mode corresponding to ratio, wherein lateral (A) series is respectively that can produce height dark line width ratio
No-voltage (I) applies low-voltage (II) and applies three kinds of Liquid Crystal Molecules Alignments under high voltage (III), and (B) series is respectively can
The no-voltage (I) of moderate dark line width ratio is generated, low-voltage (II) is applied and applies three kinds of liquid crystal point under high voltage (III)
Son arrangement, (C) series are respectively the no-voltage (I) that can produce low dark line width ratio, apply low-voltage (II) and apply high
Three kinds of Liquid Crystal Molecules Alignments under voltage (III).Therefore, (I) to keep straight in Fig. 7 is represented without applying voltage, is matched by light merely
It is formed by Liquid Crystal Molecules Alignment to the orientation power of layer, (II) represents the intermediate grey values (ex:128) for applying low-voltage and cause
Liquid Crystal Molecules Alignment, (III) represent apply high voltage highest gray value (ex:255) and caused by Liquid Crystal Molecules Alignment.
In Fig. 7, the electrode pattern in single pixel region is only simply shown, omits other elements.The electrode includes containing
A two extension 330E and bending section 330B, and bending section 330B between two extension 330E and connects two extensions
330E.The extending direction of extension 330E is, for example, the direction D indicated on XY axes of coordinatesDL, direction DDLIt is the part data line DL
Extending direction, and arrow represents the orientation of liquid crystal molecule in this region.
Therefore, using the design method of the adjustment of the alignment direction of Fig. 7, caused by Liquid Crystal Molecules Alignment mode, can be formed
Different dark line pattern, as shown in figure 8, can referring also to Fig. 7 and Fig. 8.Fig. 8 is painted the single of multiple groups difference dark line width ratio
Pixel region dark line figure, and in each group indicate for intermediate grey values such as 128 (the first gray value) when it is generated first secretly
First dark line width W1 of line and when highest gray value such as 255 (the second gray value) generated second dark line it is second dark
Line width W2, wherein the direction D indicated on the extending direction of the first dark line such as xy axes of coordinatesDF1(parallel X-direction) is substantially parallel to
Scan line SL extending direction.In Fig. 8, (1) has dark line width ratio 3.4, and (2) have dark line width ratio 2.6, and (3) have
Dark line width ratio 2.13, (4) have dark line width ratio 1.9, and (5) have dark line width ratio 1.8.
Please refer to (I), (II) and (III) and (1) or (2) of Fig. 8 etc. of (A) series of Fig. 7 by taking negative type liquid crystal as an example
Diagram.The dark line width ratio (such as 3.4 or 2.6 or other ratios) of height such as to be generated, exposes to photo-alignment layer
When light is to determine alignment direction, then matching the region of counter electrode bending section 330B in light backward can be to liquid crystal molecule (ex: in XY
The horizontal liquid crystal rotated in plane) it generates the angle that rotates in advance and liquid crystal molecule and scan line SL is made in advance to be in oneAngle (Azimuth), therefore without any voltage is applied, as shown in (A)-(I) figure of Fig. 7, liquid crystal molecule is right
Answering the region of electrode bending portion 330B will generate relative to the arrangement mode inside contracted, and the region of counter electrode extension 330E
Liquid crystal molecule then maintain the arrangement mode parallel with scan line SL.When voltage increase, such as applies low-voltage and reach intermediate ash
Angle value (ex:128) ((A)-(II) of Fig. 7), the liquid crystal molecule in the counter electrode bending section region 330B is gradually turned out.When applying
High voltage reaches highest gray value (ex:255) ((A)-(III) of Fig. 7), the counter electrode bending section region 330B and extension
The liquid crystal molecule in the region 330E can all be arranged along the equipotential line direction of electric field.In this way, using the exposure side to photo-alignment layer
Formula reaches dark line width (W1&W2) corresponding to intermediate grey values and highest gray value, and then controls dark line between the two
Width ratio (W1/W2).
Similarly, the dark line width ratio (such as 2.13 or 1.9 or other moderate ratios) of moderate such as to be generated, to light
When both alignment layers are exposed to determine alignment direction, the liquid in the counter electrode bending section region 330B Yu the region extension 330E can be made
Brilliant molecule is matched in light is presented the arrangement mode as shown in (B)-(I) of Fig. 7 backward, and in the case where applying low-voltage and high voltage, liquid
The arrangement mode as shown in (B)-(II) and (B)-(III) of Fig. 7 is presented in brilliant molecule respectively.And if enabling counter electrode bending section
The liquid crystal molecule in the region 330B in light with the arrangement mode that extends out as shown in (C)-(I) of Fig. 7 is presented backward, then there may be
Lower dark line width ratio (such as 1.8 or other low ratios).
In one embodiment, in the way of such as above-mentioned Fig. 7 after photo-alignment layer is exposed, such as counter electrode bending section
Liquid crystal molecule and scan line SL are in advance in the region 330B oneAngleWhen, there is corresponding dark line width ratio to generate.Example
As Fig. 8 (1) in,Angle is to inside contract 5 degree, can produce dark line width ratio 3.4；In (2) of Fig. 8,Angle is to inside contract 0.5 degree,
It can produce dark line width ratio 2.6；In (3) of Fig. 8,Angle is to extend out 20 degree, can produce dark line width ratio 2.13；Fig. 8's
(4) in,Angle is to extend out 40 degree, can produce dark line width ratio 1.9；In (5) of Fig. 8,Angle is to extend out 60 degree, be can produce dark
Line width ratio 1.8.
In addition, also being produced when the acceptance of the bid of each group dark line figure is illustrated in intermediate grey values such as 128 (the first gray value) in Fig. 8
The dark line accounting of pixel region after raw dark line, wherein dark line accounting is defined as: the first dark line width (W1) in Y-direction/as
Plain total length L.Fig. 8-(1) generates dark line accounting 15.4% at intermediate grey values such as 128；Fig. 8-(2), in intermediate grey values
As generated dark line accounting 11.7% when 128；Fig. 8-(3) generates dark line accounting 11.0% at intermediate grey values such as 128；Fig. 8-
(4), dark line accounting 9.5% is generated at intermediate grey values such as 128；Fig. 8-(2) generates dark line at intermediate grey values such as 128
Accounting 8.8%.Dark line accounting is higher, and the aperture opening ratio of the pixel is lower.It can be required according to the aperture opening ratio of practical application to consider the
The upper limit of the ratio of one dark line width and the second dark line width.For example, when dark line width ratio is more than 3, intermediate grey values (such as
If generation dark line accounting is higher when 128) (such as dark line width ratio 3.4, dark line accounting are more than that 15%), this has indicated dark line
Wide, the aperture opening ratio of pixel is relatively low.Therefore, in one embodiment, dark line width ratio (intermediate grey values appropriate may be selected
(ex:128) dark line width divided by highest gray value (ex:255) dark line width), for example, about 2.1~about 3.0, in addition to making to regard
Angle sustainment rate maintains to stablize and be not easily susceptible to manufacture craft influence, also may conform to the demand that application product has good aperture opening ratio.
<dark line width ratio is controlled with the change in shape of pixel electrode>
In embodiment, applicable one of which technological means is that most high ash is controlled using the change in shape of pixel electrode
Dark line width corresponding to angle value and intermediate grey values, to reach dark line width ratio appropriate (intermediate grey values (ex:128)
Dark line width divided by highest gray value (ex:255) dark line width), as discussed above is greater than 2.1 (ex: between about 2.1
~dark line width ratio about 3.0) makes visual angle sustainment rate maintain to stablize and be not easily susceptible to manufacture craft influence.In another implementation
In example, the slit pattern change in shape in common electrode respective pixel region can also be used, be similar to pixel electrode pattern and extend
The pattern of portion, the area Bu Yuwan design controls dark line width ratio corresponding to highest gray value and intermediate grey values.
Fig. 9 is please referred to, is painted and can produce pixel electrode shape corresponding to higher and more low different dark line width ratios
Shape and Liquid Crystal Molecules Alignment mode, wherein lateral (A) series be respectively can produce higher dark line width ratio (such as 2.86 or its
His ratios) no-voltage (I), apply three kinds of Liquid Crystal Molecules Alignments under low-voltage (II) and application high voltage (III), (B)
Series is respectively the no-voltage (I) that can produce lower dark line width ratio (such as 2.26 or low ratio in other), applies low-voltage
(II) and apply high voltage (III) under three kinds of Liquid Crystal Molecules Alignments.Likewise, the arrow of mark represents liquid crystal molecule in the area
Orientation in domain.In Fig. 9, (A) series of higher dark line width ratio can produce, two extension 330E of electrode are the same
State the extending direction of embodiment panel data line DL, but the bending section 330B of electrode then change shape make its two sides all perpendicular to
The extending direction of scan line SL (i.e. is parallel to Y-direction).Please refer to (I), (II) and (III) and figure of (A) series of Fig. 9
The diagram such as 10 (1).It is such as intended to generate higher dark line width ratio (such as 2.86 or other ratios), changes electrode bending portion
The shape of 330B.Without any voltage is applied, as shown in (A)-(I) figure of Fig. 9, liquid crystal molecule is matched according to alignment film
It is arranged to power, therefore liquid crystal molecule all maintains the row parallel with scan line SL in counter electrode extension 330E and bending section 330B
Column mode.When voltage increase, such as applies low-voltage and reach intermediate grey values (ex:128) ((A)-(II) figure of Fig. 9), it is corresponding
The liquid crystal molecule in the electrode bending portion region 330B is gradually turned out.Reach highest gray value (ex:255) when applying high voltage
((A)-(III) figure of Fig. 9), the liquid crystal molecule in the counter electrode bending section region 330B and the region extension 330E all can be along electric field
Equipotential line direction arrangement.In this way, intermediate grey values and highest gray value can be reached using special pixel electrode shape
Corresponding dark line width (W1&W2), and then control dark line width ratio (W1/W2) between the two.
In addition, can produce (B) series of lower dark line width ratio, two extension 330E of electrode are the same as aforementioned in Fig. 9
The extending direction of embodiment panel data line DL, but changing electrode shape makes the side of bending section 330B more protrude from extension
The side of 330E, that is, v-angle α E of the v-angle α B less than two extension 330E that bending section 330B is presented.It please refers to
(I), (II) and (III) and (2) of Figure 10 of (B) series of Fig. 9 etc. is illustrated.It is such as intended to generate lower dark line width ratio
(such as 2.26 or other low ratios) change (B) series of shape such as Fig. 9 of electrode bending portion 330B.Without any electricity of application
In the case where pressure, as shown in (B)-(I) figure of Fig. 9, liquid crystal molecule is arranged according to the orientation power of alignment film, therefore liquid crystal molecule is right
Electrode extension 330E and bending section 330B is answered all to maintain the arrangement mode parallel with scan line SL.When voltage increase, such as apply
Low-voltage is added to reach intermediate grey values (ex:128) ((B)-(II) of Fig. 9), the liquid crystal point in the counter electrode bending section region 330B
Son is gradually turned out.Reach highest gray value (ex:255) ((B)-(III) of Fig. 9) when applying high voltage, counter electrode prolongs
The liquid crystal molecule in the region extending portion 330E is arranged along the equipotential line direction of electric field, and corresponds to the liquid crystal molecule in the bending section region 330B
Though the angle being turned out has arrangement mode bigger but that liquid crystal molecule such as the region extension 330E has not yet been reached (therefore Figure 10
In dark line width W2 corresponding to the highest gray value as shown in (2) can be slightly larger than corresponding to the highest gray value as shown in (1)
Dark line width W2).In this way, can be reached using special pixel electrode shape corresponding to intermediate grey values and highest gray value
Dark line width (W1&W2), and then control both between dark line width ratio (W1/W2), to reach dark line width appropriate
Ratio makes visual angle sustainment rate maintain to stablize and be not easily susceptible to manufacture craft influence.
Therefore, by the design of the shape of the pixel electrode of Fig. 9 and caused by the way of Liquid Crystal Molecules Alignment, can be formed different
Dark line pattern as shown in Figure 10 can referring also to Fig. 9 and Figure 10.Fig. 9 is please referred to, two groups of difference dark line width ratios are painted
Single pixel region dark line figure, and in each group indicate for intermediate grey values such as 128 (the first gray value) when it is generated
First dark line width W1 of the first dark line and generated second dark line when highest gray value such as 255 (the second gray value)
Second dark line width W2, wherein the direction D indicated on the extending direction of the first dark line such as XY axes of coordinatesDF1(parallel X-direction) system is flat
Row is in scan line SL.In Fig. 9, (1) has dark line width ratio 2.86, and (2) have dark line width ratio 2.26.
<dark line width ratio is controlled with liquid crystal parameter>
Liquid crystal is such as observed with macroscopic angle, liquid crystal molecule can be considered as elastomer.When liquid crystal is through different directions stress, meeting
Three kinds of deformation such as expansion (splay), torsion (twist) and bending (bend) are generated, and K11, K22, K33 then respectively represent expansion
Open (splay), torsion (twist) and the coefficient of elasticity for being bent (bend) deformation.So liquid crystal molecule is easy by active force, electricity
The external world such as field, magnetic field influences and deforms.Figure 11 A, Figure 11 B, Figure 11 C are please referred to, liquid crystal is painted respectively and generates expansion
(splay), it reverses (twist) and is bent the schematic diagram of three kinds of deformed states such as (bend).In embodiment, it is applicable wherein
A kind of technological means is that dark line corresponding to highest gray value and intermediate grey values is controlled using the liquid crystal of different coefficient of elasticity
Width, to reach dark line width ratio appropriate, the dark line greater than 2.1 (ex: between about 2.1~about 3.0) as discussed above
Width ratio makes visual angle sustainment rate maintain to stablize and be not easily susceptible to manufacture craft influence.
Figure 12 is please referred to, is painted the single pixel region dark line figure of two groups of difference dark line width ratios, and in each group
Indicate when for intermediate grey values such as 128 (the first gray value) the first dark line width W1 of generated first dark line and in most
Second dark line width W2 of generated second dark line when high gray value such as 255 (the second gray value), wherein the first dark line is prolonged
Stretch the direction D indicated on direction such as xy axes of coordinatesDF1(parallel X-direction) is parallel to the substantive extending direction of scan line SL.Figure 12
In, (1) selects the liquid crystal of lower expansion (splay) elastic constant K11, can produce biggish dark line width ratio 2.93, (2) choosing
With the liquid crystal of higher expansion (splay) elastic constant K11, lower dark line width ratio 2.42 can produce.
In one embodiment, the liquid crystal of liquid crystal layer its expand the range that (splay) elastic constant K11 is 10-20；One embodiment
In, the range that its bending of the liquid crystal of liquid crystal layer (bend) elastic constant K33 is 10-25 can reach dark line width ratio appropriate,
Such as between about 2.1~about 3.0, visual angle sustainment rate is made to maintain to stablize and be not easily susceptible to manufacture craft influence.
According to above-mentioned, using Exposure mode (the adjustment counter electrode bending section area 330B to photo-alignment layer in embodiment
Liquid crystal molecule and scan line SL are in advance in domainAngle size, to reach dark line corresponding to intermediate grey values and highest gray value
Width (W1 and W2) liquid crystal parameter (such as elastic constant K11 or K33 suitable using change electrode shape or selection
Deng), and then controlling dark line width ratio (W1/W2) between the two and falling within can make visual angle sustainment rate maintain to stablize and be not easily susceptible to
The interval range that manufacture craft influences, for example, about 2.1~about 3.0.Certainly, above-mentioned three kinds of technological means are removed, remaining can reach
The technological means of dark line width corresponding to intermediate grey values and highest gray value and its ratio is controlled, category present invention can be used
Means.
In addition, dark line width can determine in the following way in embodiment.(1) for please referring to Figure 12, for intermediate ash
Generated dark line figure is measured when angle value such as 128 (the first gray value), for vertical with the first dark line in dark line figure
And gray scale output is carried out across the ab two o'clock distance d of the first dark line, such as figure software is picked to the shadow of at least distance, d with image
As output gray level value, Figure 13 is please referred to, the curve graph of gray value corresponding to distance d in (1) of Figure 12 is painted.Assuming that distance
Maximum gradation value is 100 in d, lowest gray value 50, then with halfwidth (FWHM, full width at half maximum)
That is valley width corresponding to gray value 75 obtains the first dark line of the first dark line in (1) of Figure 12 as dark line width
Width W1.All dark line width are all applicable in embodiment.Furthermore in an embodiment, it is, for example, to use eyepiece that dark line, which measures,
10X Olympus, object lens 50X Olympus, light source are product itself backlight module and photosensitive coupling element (Charge
Coupled Device, CCD) model Motic Moticam 2300.
In conclusion the display panel that embodiment is proposed, utilizes the first dark line width corresponding to intermediate grey values
(W1) wide to adjust dark line corresponding to different gray values with the difference of the second dark line width (W2) corresponding to highest gray value
The ratio (W1/W2) of degree.Falling within it by the dark line width ratio (W1/W2) of control between the two can be such that visual angle sustainment rate ties up
Keep steady an interval range that is fixed and being not easily susceptible to manufacture craft influence, such as W1/W2 about 2.1~about 3.0, and then makes display device
It can reach quite stable visual angle sustainment rate, be not easily susceptible to the influence of manufacture craft variation, and also may conform to application product to have
The demand of good aperture opening ratio.Therefore, the design proposed according to embodiment, can be improved product yield, make display panel obtained
With stablizing excellent display quality.
As above content and shown in structure, be to describe section Example of the invention, rather than to limit this hair
Bright range.In the embodiment of other different structures, such as the first, second transparency conducting layer pattern (including number of gaps,
Gap width, width ... of electrode branch etc.) data line and scan line SL extending direction folded by angle or
Whether gap end has bending ... etc., is all to belong to the applicable range of the present invention.Furthermore the aspect of display panel whether top
Pixel electrode form top common electrode form or other aspects all can be using the present invention.Furthermore, if matched using light
Liquid crystal alignment is completed to layer or using the mode of polish-brush orientation, it all can be using the present invention.In one embodiment, liquid crystal layer
Liquid crystal molecule be, for example, have pre-tilt angle between 0 degree to 4 degree range (such as using such as 0 degree of its liquid crystal pretilt angle of photo-alignment layer,
Using such as 2 degree of polish-brush both alignment layers its liquid crystal pretilt angle).And liquid crystal molecule is also not necessarily limited to positive type liquid crystal or negative type liquid crystal.It is logical
Normal skill when knowing, the demand of dependency structure of the invention view practical application and may have corresponding adjustment and change.
Although disclosing the present invention in conjunction with above embodiments, it is not intended to limit the invention.Skill belonging to the present invention
Have usually intellectual in art field, without departing from the spirit and scope of the present invention, can be used for a variety of modifications and variations.Cause
This, protection scope of the present invention should be subject to what the appended claims were defined.
Claims (15)
1. a kind of display panel, comprising:
First substrate, comprising:
Scan line is set in a first base material；With
Data line is set in the first base material, and is staggered with the scan line, and defines an at least pixel region, the picture
Include in plain region:
Electrode, include two extensions and a bending section, two extension substantially parallel to the data line extending direction, and this
Crooked position is between two extension and connects two extension；
The second substrate is oppositely arranged with the first substrate；With
Liquid crystal layer is set between the first substrate and the second substrate；
Wherein, a light generates one first dark line and more second dark lines by the pixel region, which corresponds to the electrode
The bending section and the extending direction of first dark line be parallel to the scan line, those second dark lines correspond to two extension,
Wherein, in first gray value, first dark line has the first dark line width, and in second gray value, this is first dark
Line has the second dark line width, the ratio of the first dark line width and the second dark line width between 2.1~3.0, wherein this
One gray value is the half of the display panel whole gray value, and second gray value is the highest gray value of the display panel.
2. display panel as described in claim 1, when wherein the pixel region is green sub-pixel, in second gray value
First dark line has the first green dark line width, when which is red sub-pixel, in second gray value this
One dark line has the first red dark line width, and the first green dark line width is less than the first red dark line width.
3. display panel as claimed in claim 2, when wherein the pixel region is blue sub-pixels, in second gray value
First dark line has the first blue dark line width, and the first green dark line width is less than the first blue dark line width.
4. display panel as described in claim 1, wherein the extending direction of those the second dark lines two prolongs substantially parallel to this
Extending portion.
5. display panel as described in claim 1, wherein the liquid crystal of the liquid crystal layer its expand (splay) elastic constant K11 and be
The range of 10-20.
6. display panel as described in claim 1, wherein the liquid crystal of the liquid crystal layer its be bent (bend) elastic constant K33 and be
The range of 10-25.
7. display panel as described in claim 1, wherein the liquid crystal molecule of the liquid crystal layer has pre-tilt angle between 0 degree to 4 degree
Range.
8. display panel as described in claim 1, wherein two extension of the electrode and the scan line have an angle in
80-87 degree range.
9. display panel as described in claim 1, wherein the electrode includes multiple electrodes branch (branches) and slit
(slits) it is each positioned between those electrode branches, respectively the electrode branch includes two extension and between two extension
And bending section being connect respectively with two extension.
10. display panel as claimed in claim 9, it is between 1.5 μm of -4 μ m that wherein those slits, which respectively have width,.
11. display panel as claimed in claim 9, wherein those electrode branches respectively have width be 1.5 μm of -4 μ m it
Between.
12. display panel as described in claim 1, wherein in the pixel region further include: thin film transistor (TFT) (TFT), first
Transparency conducting layer is located above the thin film transistor (TFT), insulating layer is located between the thin film transistor (TFT) and first transparency conducting layer,
Be located above first transparency conducting layer with the second transparency conducting layer, and the electrode be first transparency conducting layer and this second thoroughly
One of bright conductive layer is simultaneously electrically connected with the thin film transistor (TFT).
13. display panel as claimed in claim 12, wherein first transparency conducting layer and second transparency conducting layer be apart
50nm~700nm.
14. display panel as claimed in claim 12, wherein between the thin film transistor (TFT) and first transparency conducting layer
The insulating layer be an organic insulator, first transparency conducting layer and second transparency conducting layer are at a distance of 300nm~700nm.
15. display panel as claimed in claim 12, wherein between the thin film transistor (TFT) and first transparency conducting layer
The insulating layer be an inorganic insulation layer, first transparency conducting layer and second transparency conducting layer are at a distance of 50nm~300nm.
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| JP2011085738A (en) * | 2009-10-15 | 2011-04-28 | Sharp Corp | Liquid crystal display device |
| CN102629057A (en) * | 2011-02-07 | 2012-08-08 | 三星电子株式会社 | Liquid crystal display |
| CN103676387A (en) * | 2013-12-30 | 2014-03-26 | 京东方科技集团股份有限公司 | Array substrate and display device |
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| KR100209531B1 (en) | 1996-06-22 | 1999-07-15 | 구자홍 | Liquid crystal display device |
| KR100288766B1 (en) * | 1997-10-07 | 2001-06-01 | 윤종용 | Wide viewing angle liquid crystal display device |
| JP2003140188A (en) * | 2001-11-07 | 2003-05-14 | Hitachi Ltd | Liquid crystal display device |
| KR20070014283A (en) * | 2005-07-28 | 2007-02-01 | 삼성전자주식회사 | Thin film transistor array panel, manufacturing method thereof, and liquid crystal display including the same |
| CN101568875B (en) * | 2006-12-05 | 2014-10-08 | 夏普株式会社 | Liquid crystal display device |
| KR101929345B1 (en) * | 2011-12-21 | 2018-12-17 | 엘지디스플레이 주식회사 | Fringe field switching liquid crystal display device |
| KR101897749B1 (en) * | 2012-06-25 | 2018-09-12 | 엘지디스플레이 주식회사 | Liquid crystal display device having wide viewing angle |
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| JP2011085738A (en) * | 2009-10-15 | 2011-04-28 | Sharp Corp | Liquid crystal display device |
| CN102629057A (en) * | 2011-02-07 | 2012-08-08 | 三星电子株式会社 | Liquid crystal display |
| CN103676387A (en) * | 2013-12-30 | 2014-03-26 | 京东方科技集团股份有限公司 | Array substrate and display device |
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