CN1991488A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN1991488A CN1991488A CNA2006100959714A CN200610095971A CN1991488A CN 1991488 A CN1991488 A CN 1991488A CN A2006100959714 A CNA2006100959714 A CN A2006100959714A CN 200610095971 A CN200610095971 A CN 200610095971A CN 1991488 A CN1991488 A CN 1991488A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 138
- 239000004065 semiconductor Substances 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 7
- 238000002161 passivation Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011368 organic material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 7
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 abstract 4
- 230000006866 deterioration Effects 0.000 description 39
- 239000011159 matrix material Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13396—Spacers having different sizes
Abstract
A liquid crystal display device minimizing touch inferiority and a press inferiority defects is provided. The device includes first and second substrates, a liquid crystal layer interposed therebetween, gap spacers between the first and second substrates for maintaining a cell gap, and pressure spacers between the first and second substrates configured to contact the first and second substrates when pressure is applied to the first or second substrate, wherein a spatial density of the gap spacers or a spatial density of the pressure spacers varies at different positions across the first and second substrates.
Description
Technical field
The present invention relates to liquid crystal display (LCD) device, relate more specifically to a kind of like this LCD device, it can be by preventing to touch deterioration (touch inferiority) and pressure deterioration (pressinferiority) according to the two density of the position adjustments clearance gap body of LCD panel and pressure intervals body.
Background technology
Panel display apparatus owing to be of compact construction, light weight and low energy consumption obtained development widely.Flat-panel monitor comprises LCD (LCD), Plasmia indicating panel (PDP), field-emitter display (FED) and vacuum fluorescent display (VFD).LCD becomes more and more welcome owing to driving easily and having excellent image display capability.
Fig. 1 is the synoptic diagram of the part of the typical LCD panel of expression.As shown in Figure 1, LCD panel 1 comprises infrabasal plate 5, upper substrate 3 substantially and is arranged in liquid crystal layer 7 between them.Infrabasal plate 5 (being also referred to as the driving element array base palte) comprises a plurality of pixel (not shown), and wherein each pixel all comprises driving element or thin film transistor (TFT) (TFT).Upper substrate 3 (being also referred to as filter substrate) comprises the colour filter that is used to provide color.Infrabasal plate 5 and upper substrate 3 also comprise pixel electrode and public electrode respectively.On infrabasal plate 5 and upper substrate 3, be formed with both alignment layers, so that the liquid crystal molecule in the liquid crystal layer 7 is carried out orientation.
Can utilize to be used for forming and handle and be used for forming to handle making the LCD panel at the filter substrate that upper substrate 3 forms color filters at the driving element array base palte that infrabasal plate 5 forms driving elements.Can utilize interval body and sealant to form processing and finish this manufacturing processing.
The driving element array base palte forms to handle and generally includes: form many select liness and data line to limit pixel region on infrabasal plate 5; In each pixel region, form thin film transistor (TFT) (TFT) (that is, driving element), each TFT is connected with data line with a select lines; And the pixel electrode that is formed for when applying signal, driving liquid crystal layer 7 by TFT.Filter substrate forms to handle and comprises: form black matrix (black matrix) on upper substrate 3, form color filter on formed black matrix, and form public electrode.
Yet there is its oneself problem in the cylindricality interval body.At first, they possibly can't prevent the touching degradation defect in the generation of the surface of LCD device.For example, when streaking the surface portion of LCD device, the uneven brightness at the part place of being streaked may produce spot.Secondly, when pushing LCD device surperficial with fixing power the pressure degradation defect can appear.In this case, filter substrate or TFT substrate may be out of shape and produce corresponding spot.
Summary of the invention
In one embodiment, a kind of liquid crystal indicator comprises: first substrate and second substrate; And first and second the liquid crystal layer between the substrate.Between first and second substrates, exist the cylindricality interval body with the holding unit gap, and have projection to contact with corresponding cylindricality interval body, wherein at the diverse location place of described first or second substrate, the space density difference of described projection.
In another embodiment, a kind of liquid crystal indicator comprises: with the first cylindricality interval body of first and second substrate contacts; And be arranged in one of described first and second substrates go up and with another isolated second cylindricality interval bodies of described first and second substrates.The space density of described first interval body changes on described first and second substrates, makes the space density of middle body less than outer peripheral portion.
In another embodiment, a kind of liquid crystal indicator comprises a plurality of pixels.The first cylindricality interval body and first and second substrate contacts, and the second cylindricality interval body is arranged in one of described first and second substrates and goes up and spaced apart with another of described first and second substrates.The quantity of described first interval body in described a plurality of pixel changes on described first and second substrates, makes the quantity of the first cylindricality interval body in the pixel of middle body of display less than the quantity of the first cylindricality interval body in the pixel of outer peripheral portion.
In another embodiment, a kind of liquid crystal indicator comprises the first cylindricality interval body with first and second substrate contacts.A plurality of pixels comprise select lines and data line.The second cylindricality interval body is arranged on of described first and second substrates, and with described first and second substrates in another is spaced apart.The middle body of the quantity of the second cylindricality interval body between the described first cylindricality interval body from the peripheral part of display towards display increases along described data line and select lines.
In another embodiment, a kind of liquid crystal indicator comprises: first substrate and second substrate; And first and second the liquid crystal layer between the substrate.The cylindricality interval body between first and second substrates with the holding unit gap.Have projection contact with corresponding cylindricality interval body, and the distance between the described projection along from the periphery of display towards described first or the direction increase of the central authorities of second substrate.
In another embodiment, a kind of method of making liquid crystal indicator comprises: form first and second substrates; And between first and second substrates, form the cylindricality interval body with the holding unit gap.Form projection to contact with corresponding cylindricality interval body, wherein, the space density of described projection is in the diverse location place difference of described first or second substrate.Between described first and second substrates, arrange liquid crystal layer.
Description of drawings
Fig. 1 is a cut-open view of schematically representing the LCD panel;
Fig. 2 is the cut-open view of expression according to the LCD panel of an aspect of the disclosure;
Fig. 3 is the planimetric map of expression according to LCD panel of the present invention;
Fig. 4 A and Fig. 4 B are the partial sectional views along the line I-I ' of Fig. 3;
Fig. 5 A and Fig. 5 B schematically represent according to the position on the LCD panel, the density difference of clearance gap body and pressure intervals body localization;
Fig. 6 A to Fig. 6 C is the curve map of expression according to the density of the projection in the LCD panel of the present invention; And
Fig. 7 A to Fig. 7 C is expression has the LCD panel of projection and cylindricality interval body according to the present invention figure.
Embodiment
Because contacting and on the LCD device, produce the touching deterioration during touching between cylindricality interval body and the substrate.That is, the contact meeting between cylindricality interval body and the substrate produces friction force between them.If substrate is subjected to the influence of these friction force unfriendly, then liquid crystal molecule may not can recover its virgin state, thereby can produce spot in the touching part.Can be by reducing the quantity with the cylindricality interval body of substrate contacts, reduce or prevent to touch deterioration.
When in color filter substrate and/or thin film transistor (TFT) (TFT) substrate, producing distortion, can produce the pressure deterioration when exerting pressure to substrate.Can make when exerting pressure by increasing the quantity of cylindricality interval body, can prevent filter substrate and/or TFT base plate deformation, reduce or prevent the pressure deterioration.
Touching deterioration and pressure deterioration are with opposite principle effect.When increasing the space density of cylindricality interval body, increased the contact area between cylindricality interval body and the substrate, thereby caused more touching deterioration.Yet when the substrate applied pressure increased, the pressure deterioration still less.On the other hand, when reducing the space density of cylindricality interval body, reduce the contact area between cylindricality interval body and the substrate, thereby caused touching deterioration still less.Yet when the substrate applied pressure increased, substrate may be out of shape, thereby the pressure deterioration increases.
In view of the contrary principles of touching deterioration and pressure deterioration, be difficult to reduce simultaneously or prevent this two phenomenons.In other words, can not regulate simply the quantity of cylindricality interval body or their space density reduce simultaneously touching deterioration and pressure deterioration the two.
The invention provides the cylindricality interval body so that touching deterioration and pressure deterioration minimize.Figure 2 illustrates this cylindricality interval body.
As shown in Figure 2, the infrabasal plate 105 that uses sealant 106 will have such as the driving element array of TFT is attached on the upper substrate 103 with color filter.Between infrabasal plate 105 and upper substrate 103, accompany liquid crystal layer 107.On upper substrate 103, be formed with a plurality of first cylindricality interval bodies 108 and the second cylindricality interval body 109.At this moment, the first cylindricality interval body 108 and the second cylindricality interval body 109 are spaced a predetermined distance from infrabasal plate 105.On infrabasal plate 105, be formed with a plurality of projections 118 with the first cylindricality interval body, 108 corresponding location.As shown in Figure 2, the first cylindricality interval body contacts with projection 118, but the second cylindricality interval body 109 separates with infrabasal plate 105.
The first cylindricality interval body 108 contacts with projection on the infrabasal plate 105, to keep the cell gap of fixing between upper substrate 103 and the infrabasal plate 105.Like this, the combination of the first cylindricality interval body 108 and projection 118 is as the cell gap of clearance gap body to be maintained fixed.
Because the second cylindricality interval body 109 and infrabasal plate 105 spaced apart preset distances, therefore the second cylindricality interval body 109 does not contact with infrabasal plate 105.Yet when pushing upper substrate 103 and infrabasal plate 105, thereby the second cylindricality interval body 109 contacts the distortion that has prevented upper substrate 103 and infrabasal plate 105 with infrabasal plate 105.Like this, the second cylindricality interval body 109 is as the pressure intervals body.
The first cylindricality interval body 108 and the second cylindricality interval body 109 same material by for example organic material in same processing is formed on the upper substrate 103, and by the processing different with cylindricality interval body 108 and 109 projection 118 is formed on the infrabasal plate 105.That is, the first cylindricality interval body 108 and the second cylindricality interval body 109 have essentially identical structure.Like this, the first cylindricality interval body 108 all is arranged to the space structure identical with traditional cylindricality interval body with the second cylindricality interval body 109.
According to one embodiment of the invention, the first cylindricality interval body, 108 contact protrusions 118 only, thus the first cylindricality interval body 108 keeps the cell gap of display panels 101.Yet, because the quantity of projection 118 is less than the total quantity of the first cylindricality interval body 108 and the second cylindricality interval body 109, therefore the clearance gap body in holding unit gap (promptly, the combination of the first cylindricality interval body 108 and projection 118) quantity is less than the quantity of the clearance gap body (that is traditional cylindricality interval body of prior art) of prior art.Therefore, compare, reduced the quantity of the cylindricality interval body that contacts with infrabasal plate, thereby reduced the contact area between cylindricality interval body and the infrabasal plate with the cylindricality interval body of prior art.
In addition, as shown in Figure 2,, therefore compare, further reduced the contact area between cylindricality interval body and the infrabasal plate 105 with the contact area of the cylindricality interval body of prior art because the sectional area of projection 118 is less than the first cylindricality interval body 108.Therefore, in liquid crystal panel of the present invention, can prevent to touch deterioration effectively.
In addition, because the second cylindricality interval body 109 contacts with infrabasal plate 105 and as the pressure intervals body when pushing first substrate 103 with second substrate 105, so can prevent the pressure deterioration that causes because of pressure effectively.
When not when upper substrate 103 and infrabasal plate 105 are exerted pressure, according to illustrated embodiment, only the first cylindricality interval body 108 contacts with projection 118 and keeps the cell gap of display panels 101.Like this, compared with prior art, reduced the quantity of the cylindricality interval body that contacts with infrabasal plate, thereby can prevent to touch deterioration.In addition, when when upper substrate 103 and infrabasal plate 105 are exerted pressure, the first cylindricality interval body 108 also contacts with projection 118, and the second cylindricality interval body 109 also contacts with infrabasal plate 105, thereby can prevent the pressure deterioration.In other words, because all cylindricality interval bodies 108 all contact with infrabasal plate 105 with 109 when upper substrate is exerted pressure with infrabasal plate, therefore can prevent the pressure deterioration.
Fig. 3 is the planimetric map with liquid crystal indicator of cylindricality interval body 108 and 109 of the present invention.Although shown in-plane switching liquid crystal display device in the drawings as an example of the present invention, for the liquid crystal indicator of other type, for example twisted nematic and perpendicular alignmnet type liquid crystal indicator etc. also can be used the present invention.
Shown in the embodiment as shown in Figure 3, liquid crystal indicator comprises a plurality of pixels that limited by a plurality of select liness 130 and data line 135, and is furnished with thin film transistor (TFT) 150 at each pixel place.
Thin film transistor (TFT) 150 comprises: the grid 151 that links to each other with the select lines 130 that is applied in sweep signal; Semiconductor layer 152 on the grid 151, it forms channel layer by the sweep signal activation that imposes on select lines 130; And source electrode on the semiconductor layer 152 153 and drain electrode 154, be used for picture signal is sent to pixel from data line 135.
In pixel, be furnished with at least one public electrode 162 and pixel electrode 164 abreast, be parallel to the electric field of substrate surface with generation.In pixel, be furnished with concentric line 137 that links to each other with public electrode 162 and the pixel electrode line 138 that links to each other with pixel electrode 164.Concentric line 137 and pixel electrode line 138 overlap and form memory capacitance.
On select lines 130, be formed with a plurality of cylindricality interval bodies 108 and 109.Although in Fig. 3, in each pixel, only form a cylindricality interval body, can in each pixel, form two cylindricality interval bodies, perhaps can at least two pixels, only form a cylindricality interval body.
The combination of the first cylindricality interval body 108 and projection 118 is as the clearance gap body, and the second cylindricality interval body 109 that does not contact with projection 118 is as the pressure intervals body.
In aspect of illustrative embodiments, clearance gap body and pressure intervals body alternately are arranged in the pixel.In illustrative embodiments, clearance gap body and pressure intervals body are distributed in the whole zone of substrate 103 and 105, with the cell gap that is maintained fixed and prevent to touch deterioration and the pressure deterioration.
Although in Fig. 3 cylindricality interval body 108 and 109 and projection 118 be formed on the select lines 130, cylindricality interval body 108 and 109 and projection 118 also can be formed on the data line 135 or be formed in the intersection region of select lines 130 and data line 135.
Fig. 4 A and Fig. 4 B are the cut-open views along the line I-I ' of Fig. 3, show according to the cylindricality interval body 108 of the LCD panel of illustrative embodiments and 109 and the structure of projection 118.Upper substrate is the filter substrate with color filter (not shown); Infrabasal plate is the TFT substrate with a plurality of TFT.Illustrative TFT substrate comprises grid 151 on the infrabasal plate 105, the gate insulation layer 162 on the infrabasal plate 105, the semiconductor layer 152 on the gate insulation layer 162, and source electrode on the semiconductor layer 152 153 and drain electrode 154.In addition, projection 118 comprises semiconductor layer 118a on the gate insulation layer 162 and the metal level 118b on the semiconductor layer 118a.On TFT and projection 118, form passivation layer 164.
Can form the semiconductor layer 118a of projection 118 by the processing identical with the semiconductor layer 152 of TFT.Can form metal level 118b by the processing identical with the source electrode 153 of TFT and drain electrode 154.Although form semiconductor layer 118a and metal level 118b, can form projection 118 and TFT by identical processing by the processing that is different from TFT.Projection 118 can be formed by semiconductor material or metal material.
The first cylindricality interval body 108 and the second cylindricality interval body 109 are formed on the upper substrate 103.The first cylindricality interval body 108 and the second cylindricality interval body 109 are formed by organic material by common or independent processing.
Shown in Fig. 4 B, projection 118 can be formed on the passivation layer 164 of infrabasal plate 105.Projection 118 can be formed by organic or metal material.The first cylindricality interval body 108 can directly contact with infrabasal plate 105 and not have projection 118.In this case, can reduce the sectional area of the end that contacts with infrabasal plate 105, with the surface that reduces infrabasal plate 105 and the friction force between the first cylindricality interval body 108.
Shown in Fig. 4 A and Fig. 4 B, cylindricality interval body 108 contacts with the end with projection 118 with 109 end face is smooth.The area that the clearance gap body contacts with projection can be bigger 1.5 to 2.5 times than the end of projection.In addition, cylindricality interval body 108 and 109 end face can be circle.
In order to eliminate touching deterioration and the pressure deterioration in the LCD panel simultaneously, the LCD panel can be configured to make projection 118 localization according to the position on the LCD panel with different density.
At the middle section and the fringe region place of LCD panel, the touching deterioration is different with the degree of pressure deterioration.Touch deterioration in the middle section place of LCD panel maximum, and reduce towards the fringe region of LCD panel.Like this, the quantity (or density) of clearance gap body that causes touching deterioration is the highest at the middle section place, and reduces so that touch deterioration and minimize towards fringe region from middle section.
In addition, the pressure deterioration is in the middle section place of LCD panel maximum, and reduces towards the fringe region of LCD panel.Like this, because pressure deterioration and the highest at the middle section place, and reduce so that the pressure deterioration minimizes towards fringe region from middle section with the quantity (or density) of the pressure intervals body of substrate contacts.
As mentioned above, the clearance gap body becomes the position of basis on the LCD panel with the pressure intervals bodily form and has different density (or quantity), thereby can prevent to touch deterioration and pressure deterioration.Simultaneously, clearance gap body and pressure intervals body are by projection 118 definition.That is, the first cylindricality interval body 108 is used as the clearance gap body because of contacting with projection 118, and the second cylindricality interval body 109 is used as the pressure intervals body because of not contacting with projection 118.Because cylindricality interval body 108 and 109 is evenly distributed on the LCD panel, so the density (or quantity) of clearance gap body and pressure intervals body depends on the density (or quantity) of projection 118.In other words, the density of projection 118 (or quantity) reduces towards middle section from fringe region, and the density of clearance gap body (or quantity) also reduces towards middle section.In addition, because still less projection is arranged, so the density of pressure intervals body (or quantity) increases towards middle section.
Fig. 5 A and Fig. 5 B are the views of representing the density of projection 118 conceptually.Projection 118 is positioned at the fringe region place with higher space density " a ", and be positioned at the space density that successively decreases near the middle section of LCD panel, shown in Fig. 5 A and Fig. 5 B (promptly, a1＜a2＜a3＜a4, here, a1, a2, a3 and a4 are illustrated respectively in the projection density at the area I, II, III and the IV place that divide in the LCD panel).Density area can be respectively by circular or square qualification the shown in Fig. 5 A and Fig. 5 B.Circular or square selection be can be depending on the size or the length breadth ratio of the LCD panel 101 of manufacturing.Yet the density area of LCD panel 101 is not necessarily limited to four zones; But they can be divided into any basically a plurality of density areas.
By the LCD panel structure being become the distribution that has different projection 118 according to the position on the LCD panel, to have the distribution of different clearance gap body and pressure intervals body, can reduce simultaneously touching deterioration in the LCD panel and pressure deterioration the two.
The density that can make projection 118 increases towards fringe region in every way from the middle section of LCD panel.For example, can be linear or non-linearly change the density of projection 118.
The change of the density of the projection 118 in the LCD panel means the change of distance between the change of quantity of projection 118 and the neighboring projection 118.That is, mean reducing of between the increase of respective regions place projection 118 quantity and neighboring projection distance in the increase of the density of the fringe region place of LCD panel projection 118.In addition, in the increase that reduces to mean distance between the minimizing of respective regions place projection 118 quantity and neighboring projection of the middle section place of LCD panel projection 118 density.
In addition, because cylindricality interval body 108 and 109 is distributed on the whole zone of LCD panel regularly, therefore the increase of distance means between the middle section place of LCD panel neighboring projection, is arranged in the increase of the quantity of the cylindricality interval body 109 between the projection 118.
Fig. 6 A to Fig. 6 C is the curve map that is illustrated in the density of the projection 118 in the LCD panel of arranging according to one embodiment of the invention, and Fig. 7 A to Fig. 7 C is the figure that expression has the LCD panel of projection 118 and cylindricality interval body 108 and 109.For illustrative purpose,, these figure of drafting do not have the detailed structure of LCD panel because to describe the present invention conceptually, therefore only having drawn pixel.That is, these figure only comprise pixel and projection wherein and the cylindricality interval body of arranging along the vertical and horizontal directions, and do not have detailed structure.
Although not shown, LCD panel of the present invention comprises IPS type, TN type and VA type LCD panel.In addition, although in the drawings cylindricality interval body 108 and 109 and projection 118 be arranged in the pixel cylindricality interval body 108 and 109 and projection 118 also can be arranged on the select lines, on the data line and the intersection region of select lines and data line place.
As shown in Figure 6A, can increase the density (wherein initial point is represented the central authorities of LCD panel) of projection 118 linearly from the middle section of LCD panel towards fringe region.Therefore, along with increasing apart from d of distance middle section, the density of projection 118 increases linearly.The linear change of the density of projection 118 has been shown in Fig. 7 A.In Fig. 7 A, cylindricality interval body 108 and 109 is arranged in each pixel, and projection 118 is arranged in the intended pixel to form the clearance gap body.In this case, towards fringe region, the distance between the neighboring projection 118 reduces linearly from middle section, and the quantity of projection 118 increases linearly.
Form the clearance gap body owing to projection 118 contacts with the first cylindricality interval body 108, therefore aspect the clearance gap body, can increase the density of clearance gap body linearly towards fringe region from the middle section of LCD panel.
Shown in Fig. 6 B, in the present invention, the density of projection 118 of the present invention can increase with exponential manner towards fringe region from the middle section of LCD panel.Along with increasing apart from d of distance middle section, the density of projection 118 is index and increases.Shown in Fig. 7 B, towards fringe region, the distance between the neighboring projection 118 is index and reduces from middle section, and the quantity of projection 118 is the index increase.
Shown in Fig. 6 C, in another aspect of this invention in, the density of projection 118 can be logarithmically towards fringe region from the middle section of LCD panel to be increased.Along with increasing apart from d of distance middle section, the density of projection 118 is logarithm to be increased.Shown in Fig. 7 C, towards fringe region, the distance between the neighboring projection 118 is logarithmically and reduces from middle section, and the quantity of projection 118 is logarithmically and increases.
Can under the situation that does not break away from spirit of the present invention or essential characteristic, implement the present invention with several means, what therefore will also be understood that is, except as otherwise noted, the foregoing description is not subjected to the restriction of previously described any details, and should be thought widely and fall in the spirit and scope that claims limit.Therefore, claims have covered scope and interior change and the modification of boundary that drops on claims or its equivalent.
Claims (48)
1, a kind of liquid crystal indicator comprises:
First substrate and second substrate;
Liquid crystal layer between first and second substrates;
Cylindricality interval body between first and second substrates; And
The projection that contacts with corresponding cylindricality interval body,
Wherein, at the diverse location place of described first or second substrate, the space density difference of described projection.
2, device according to claim 1 also comprises:
Be positioned on described second substrate, define the select lines and the data line of a plurality of pixels; With
Thin film transistor (TFT) in each pixel.
3, device according to claim 2, wherein said thin film transistor (TFT) comprises:
Grid on described second substrate;
Gate insulation layer on the described grid;
Semiconductor layer on the described gate insulation layer;
Source electrode on the described semiconductor layer and drain electrode; And
Passivation layer on described second substrate.
4, device according to claim 2, wherein, at least one cylindricality interval body is positioned on the described select lines.
5, device according to claim 2, wherein, at least one cylindricality interval body is positioned on the described data line.
6, device according to claim 1, wherein, at least one in the described cylindricality interval body comprises organic material.
7, device according to claim 1, wherein, at least one in the described projection comprise be configured to be arranged in relative substrate on the end of corresponding cylindricality interval body contact.
8, device according to claim 1, wherein, at least one projection arrangement is on described second substrate, and described cylindricality interval body is arranged on described first substrate.
9, device according to claim 7, wherein, the area of the end of described projection less than with the area of the corresponding cylindricality interval body of relative substrate contacts.
10, device according to claim 9, wherein, the area of described corresponding cylindricality interval body is bigger 1.5 to 2.5 times than the end of described projection.
11, device according to claim 3, wherein, described projection comprises:
Semiconductor layer on the described gate insulation layer; With
Metal level on the described semiconductor layer.
12, device according to claim 10, wherein, described projection comprises the metal level on the described passivation layer.
13, device according to claim 1, wherein, at least one in the described cylindricality interval body is positioned on described first substrate, and with the spaced apart preset distance of described second substrate.
14, device according to claim 1, wherein, the space density of the projection of the middle body of described substrate is lower than the outer peripheral portion of described substrate.
15, device according to claim 1, wherein, the space density of described projection reduces on the direction of middle body linearly at the outer peripheral portion from described first and second substrates.
16, device according to claim 1, wherein, described liquid crystal indicator comprises a kind of in switch type device in the face, twisted nematic device or the perpendicular alignmnet type device.
17, a kind of liquid crystal indicator comprises:
The first cylindricality interval body with first and second substrate contacts; And
Be arranged in one of described first and second substrates go up and with another isolated second cylindricality interval bodies of described first and second substrates,
Wherein, the space density of described first interval body changes on described first and second substrates, makes the space density of middle body be lower than outer peripheral portion.
18, device according to claim 17, wherein, the described first cylindricality interval body comprises the projection that contacts with the clearance gap body.
19, device according to claim 18, wherein, described projection comprises another clearance gap body.
20, device according to claim 18, wherein, described projection comprises and is configured to the end that contacts with described clearance gap body.
21, device according to claim 18, wherein, the area of the end of described projection is less than the area of the clearance gap body that contacts with described projection.
22, device according to claim 21, wherein, the area of the clearance gap body that contacts with described projection is bigger 1.5 to 2.5 times than the end of described projection.
23, device according to claim 21, wherein, the area of the clearance gap body that contacts with described projection equals the area of the end of described projection.
24, device according to claim 18, wherein, described clearance gap body comprises the structure with flat surfaces.
25, device according to claim 24, wherein, the area of the end of described projection is less than the area of the flat surfaces of described clearance gap body.
26, device according to claim 18, wherein, described clearance gap body comprises the structure with circular surface.
27, a kind of liquid crystal indicator comprises:
A plurality of pixels;
The first cylindricality interval body with first and second substrate contacts; And
Be arranged in one of described first and second substrates go up and with another isolated second cylindricality interval bodies of described first and second substrates,
Wherein, the quantity of the described first cylindricality interval body in described a plurality of pixel changes on described first and second substrates, makes the quantity of the first cylindricality interval body in the pixel of middle body of display less than the quantity of the first cylindricality interval body in the pixel of outer peripheral portion.
28, device according to claim 27, wherein, the described first cylindricality interval body comprises the projection that is arranged on one of described first and second substrate, described projection have be configured to be arranged in relative substrate on the end of corresponding cylindricality interval body contact.
29, device according to claim 27, wherein, the quantity of the described first cylindricality interval body in described a plurality of pixels is linear change on described first and second substrates.
30, device according to claim 27, wherein, the quantity of the described first cylindricality interval body in described a plurality of pixels changes on described first and second substrates exponentially.
31, device according to claim 27, wherein, the quantity of the described first cylindricality interval body in described a plurality of pixels changes on described first and second substrates logarithmically.
32, a kind of liquid crystal indicator comprises:
The first cylindricality interval body with first and second substrate contacts;
A plurality of pixels with select lines and data line;
Be arranged in one of described first and second substrates go up and with another isolated second cylindricality interval bodies of described first and second substrates,
Wherein, the quantity of the second cylindricality interval body between the described first cylindricality interval body increases along described data line and select lines towards the middle body of display from the peripheral part of display.
33, device according to claim 32, wherein, the described first cylindricality interval body comprises the projection that is arranged on one of described first and second substrate, described projection have be configured to be arranged in relative substrate on the end of corresponding cylindricality interval body contact.
34, device according to claim 32, wherein, the quantity of the second cylindricality interval body between the described first cylindricality interval body increases on described first and second substrates linearly.
35, device according to claim 32, wherein, the quantity of the second cylindricality interval body between the described first cylindricality interval body increases on described first and second substrates exponentially.
36, device according to claim 32, wherein, the quantity of the second cylindricality interval body between the described first cylindricality interval body increases on described first and second substrates logarithmically.
37, a kind of liquid crystal indicator comprises:
First substrate and second substrate;
Liquid crystal layer between first and second substrates;
Between first and second substrates with the cylindricality interval body in holding unit gap; And
The projection that contacts with corresponding cylindricality interval body,
Wherein, the distance between the described projection along from the periphery of display towards described first or the direction of the central authorities of second substrate increase.
38, according to the described device of claim 37, wherein, the distance between the described projection along from the periphery of display towards described first or the direction of the central authorities of second substrate increase linearly.
39, according to the described device of claim 37, wherein, the distance between the described projection along from the periphery of display towards described first or the direction index ground of the central authorities of second substrate increase.
40, according to the described device of claim 37, wherein, the distance between the described projection along from the periphery of display towards described first or the direction of the central authorities of second substrate increase logarithmically.
41, a kind of method of making liquid crystal indicator comprises:
Form first and second substrates;
Between first and second substrates, form the cylindricality interval body with the holding unit gap;
Form the projection that contacts with corresponding cylindricality interval body,
Wherein, at the diverse location place of described first or second substrate, the space density difference of described projection; And
Between described first and second substrates, arrange liquid crystal layer.
42, according to the described method of claim 41, also comprise:
On described second substrate, form select lines, data line and pixel; And
In described pixel, form thin film transistor (TFT),
Wherein, form a plurality of thin film transistor (TFT)s by the processing that comprises following step:
On described second substrate, form grid;
On described grid, form gate insulation layer;
On described gate insulation layer, form semiconductor layer;
On described semiconductor layer, form source electrode and drain electrode; And
On described second substrate, form passivation layer.
43, according to the described method of claim 42, also comprise: in select lines or data line, form at least one projection at least one side.
44, according to the described method of claim 42, wherein, form projection and be included in and form at least one projection on described second substrate, the area of the end of wherein said projection less than with the area of the corresponding cylindricality interval body of relative substrate contacts.
45, according to the described method of claim 42, wherein, at least one in the described cylindricality interval body on described first or second substrate forms and the spaced apart preset distance of relative substrate.
46, according to the described method of claim 42, wherein, described projection is formed: the space density of the projection of the middle body of substrate is less than the outer peripheral portion of substrate.
47, according to the described method of claim 42, wherein, the formation projection is included on the described gate insulation layer and forms semiconductor layer, and forms metal level on this semiconductor layer.
48, according to the described method of claim 47, wherein, the formation projection is included on the described passivation layer and forms metal level.
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| KR1020050136115 | 2005-12-30 | ||
| KR20050136115 | 2005-12-30 | ||
| KR1020060043314 | 2006-05-15 |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101343490B1 (en) | 2013-12-20 |
| KR20070072318A (en) | 2007-07-04 |
| CN100592156C (en) | 2010-02-24 |
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