CN100442110C - Method for fabricating faceplate of liquid crystal display - Google Patents
Method for fabricating faceplate of liquid crystal display Download PDFInfo
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- CN100442110C CN100442110C CNB2005100794257A CN200510079425A CN100442110C CN 100442110 C CN100442110 C CN 100442110C CN B2005100794257 A CNB2005100794257 A CN B2005100794257A CN 200510079425 A CN200510079425 A CN 200510079425A CN 100442110 C CN100442110 C CN 100442110C
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Abstract
The present invention relates to a method for manufacturing a liquid crystal display panel, which comprises the following steps: firstly, a liquid crystal display panel is provided, the liquid crystal display panel comprises a first base board, a second base board and a liquid crystal layer, wherein the liquid crystal layer comprises a plurality of sensitive monomers and a plurality of liquid crystal molecules sealed between the first base board and the second base board, and the liquid crystal display panel has at least first pixels and second pixels; then, the first pixels and the second pixels are correspondingly driven by a first voltage and a second voltage; finally, the liquid crystal display panel is irradiated by an ultraviolet light source to make the sensitive monomers polymerized into a plurality of orientated polymers on the first base board and the second base board.
Description
Technical field
The present invention relates to a kind of manufacture method of display panels, particularly relate to a kind of manufacture method with display panels of gamma-corrected function.
Background technology
Please refer to Fig. 1, it illustrates under the conventional pixel element different driving electric field, corresponds to the light transmittance (transparency) of redgreenblue.Horizontal ordinate corresponds to electric field intensity, and ordinate corresponds to light transmittance.Liquid crystal molecule has different refractive index (refractivity) and different phase delay (retardation) effects for the visible light of different wave length.Therefore, under same electric field intensity drove, the conventional pixel element had nothing in common with each other for the light transmittance of redgreenblue.
Generally speaking, for the foundation of visual experience that quantizes the user to provide LCD circuit to design, usually the light transmittance with gamma (Gamma) curve representation liquid crystal layer corresponds to the relation that human eye is experienced brightness, use intensity by the liquid crystal layer driving electric field, directly correspondence push away human eye vision experience brightness.Fig. 2 illustrates the gamma curve according to conventional liquid crystal, corresponds to the corresponding relation of electric field shown in Figure 1 and penetrance.Horizontal ordinate is corresponding to the illuminant colour exponent number among the figure, and ordinate is corresponding to light transmittance.As shown in Figure 2, the gamma curve of representing redgreenblue light is for being separated from each other, expression is when providing the identical electric field intensity of liquid crystal layer, the brightness ratio of redgreenblue light can't be kept necessarily, and will depart from this LCD preset white balance point, cause producing deviation between finding display color and input shows signal.
Can divide into circuit and two categories of structure in order to solution to the problems described above.In configuration aspects, typical method is directly adjusted in the LCD, corresponds to the thickness of liquid crystal layer that the redgreenblue pixel shows, puts on electric field intensity in the different color pixel liquid crystal layer with change.Fig. 3 illustrates the sectional view according to conventional liquid crystal.Please refer to Fig. 3, liquid crystal layer 110 clampings are between first substrate 102 and second substrate 104.And,, correspond to the pixel of different color at the upper surface of first substrate 102, be manufactured with transparent organic layer 112R, 112G and the 112B of different-thickness respectively, and, correspond to the pixel of different color at the lower surface of second substrate 104, be manufactured with chromatic filter layer 108R, 108G and 108B.The pixel electrode 106 of this three color pixel is made in the upper surface of above-mentioned transparent organic layer 112R, 112G and 112B, and common electrode 120 is made in the lower surface of chromatic filter layer 108R, 108G and 108B, uses and produce driving electric field E in liquid crystal layer 110.In addition, two alignment films 130 and 140 are made in the inner face of common electrode 120 and pixel electrode 106 respectively, so that the usefulness of liquid crystal layer 110 orientations to be provided.
It should be noted that pixel its transparent organic layer 112R, 112G of different color and the thickness of 112B have nothing in common with each other, and cause the thickness of corresponding liquid crystal layer 110 different, and the intensity of driving electric field also have nothing in common with each other.Hence one can see that, by adjusting the thickness of above-mentioned transparent organic layer 112R, 112G and 112B, can change the intensity of driving electric field, to adjust the orientation of liquid crystal molecule in the liquid crystal layer 110, use the light transmittance that changes liquid crystal layer 110, reach the purpose of the gamma curve separation of revising redgreenblue light.
Yet this solution has following shortcoming:
One, before making pixel electrode, must increase by a technology making transparent organic layer 112R, 112G and 112B, and cause cost of manufacture and time increase.
Two, since transparent organic layer 112R, 112G and 112B corresponding to the different color locations of pixels, have different thickness respectively, therefore, the upper surface of transparent organic layer is rugged and rough, thereby increase in the follow-up liquid crystal aligning technology, make alignment films 140 in the degree of difficulty of pixel electrode 106 upper surfaces.
Three, pixel electrode 106 covers the rugged upper surface of this transparent organic layer 112R, 112G and 112B, because transparent organic layer 112R, the 112G of adjacent different color and the thickness difference of 112B, thereby cause 106 of the pixel electrodes of corresponding different display colors to produce transverse electric field, and influence the orientation of liquid crystal molecule, influence the normal operation of liquid crystal layer 110.
Summary of the invention
In view of this, purpose of the present invention is exactly that a kind of manufacture method of display panels is being provided, to solve above-mentioned prior art problems.
According to purpose of the present invention, the manufacture method that proposes a kind of display panels comprises step: display panels is provided, display panels comprises first substrate, second substrate and liquid crystal layer, wherein liquid crystal layer comprises that a plurality of photo-sensitive monomers and a plurality of liquid crystal molecule are sealed between first substrate and second substrate, and display panels has at least the first pixel and second pixel; Drive first pixel and second pixel accordingly with first voltage and second voltage; Afterwards,, make a plurality of photo-sensitive monomers on first substrate and second substrate, aggregate into a plurality of orientated polymers, make the pixel of winning different with the tilt angle of second pixel with the ultraviolet source irradiation display panels.
According to purpose of the present invention, the manufacture method that proposes a kind of display panels comprises step: first substrate and second substrate are provided; One liquid crystal layer is sealed between first substrate and second substrate, and to form a display panels, liquid crystal layer has a plurality of liquid crystal molecules and a plurality of photo-sensitive monomer, and display panels has first pixel, second pixel and the 3rd pixel; Drive first pixel, second pixel and the 3rd pixel accordingly with first voltage, second voltage and tertiary voltage, wherein first voltage, second voltage and tertiary voltage are incomplete same; With the ultraviolet source irradiation display panels, make a plurality of photo-sensitive monomers on first substrate and second substrate, aggregate into a plurality of orientated polymers, make the pixel of winning, second pixel different with the tilt angle of the 3rd pixel; Remove first voltage, second voltage and tertiary voltage.
Described photo-sensitive monomer comprises at least one among the following three,
N and m are positive integer, and n=1 or 2, m=2
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, following conjunction with figs. and preferred embodiment are to illustrate in greater detail the present invention.
Description of drawings
Fig. 1 illustrates under the conventional pixel element different driving electric field, corresponds to the light transmittance of redgreenblue.
Fig. 2 illustrates the gamma curve according to conventional liquid crystal, corresponds to the corresponding relation of electric field shown in Figure 1 and light transmittance.
Fig. 3 illustrates the sectional view according to conventional liquid crystal.
Fig. 4 illustrates the process flow diagram according to the manufacture method of the display panels of a preferred embodiment of the present invention.
Fig. 5 A～5D illustrates the synoptic diagram according to the manufacture method of the display panels of a preferred embodiment of the present invention.
The simple symbol explanation
102,210: the first substrates
104,220: the second substrates
106,214: pixel electrode
108R, 108G, 108B: chromatic filter layer
110,240: liquid crystal layer
112R, 112G, 112B: transparent organic layer
120,224: common electrode
130,140,212,226: alignment films
200: display panels
221: the first color retes
222: the second color retes
223: the three color retes
242: liquid crystal molecule
244: photo-sensitive monomer
246: orientated polymer
251: the first pixels
252: the second pixels
253: the three pixels
Embodiment
Light of the present invention orientation (Photo-alignment) method utilize the tool particular polarization ultraviolet light (Ultra-Violet, UV), the irradiation photosensitive macromolecular material.This photosensitive macromolecular material utilizes specific functional group to absorb this ultraviolet light energy, produces the effect that molecule is arranged again, and forms the orientation result of similar traditional polish-brush (rubbing) technology.As mentioned above, because this photosensitive macromolecular material sees through the ultraviolet photoetching reaction, just possesses the characteristic that the light orientation is arranged, therefore, relevant exposure parameter as: the incident angle of the length of time shutter, the intensity of exposure light source and exposure light source all can exert an influence to the result that light is orientated.
Fig. 4 illustrates the process flow diagram according to the manufacture method of the display panels of a preferred embodiment of the present invention.Fig. 5 A～5D illustrates the synoptic diagram according to the manufacture method of the display panels of a preferred embodiment of the present invention.Please be simultaneously with reference to Fig. 4～5D, the manufacture method of the display panels of present embodiment comprises the following steps S202～S206 at least.
At first, shown in step S202 and Fig. 5 A, provide display panels 200, its detailed step is described below.At first, provide first substrate 210 and second substrate 220.First substrate 210 has pel array and alignment films 212.Pel array comprises a plurality of pixel electrodes 214, a plurality ofly scans signal wire (ScanLine SL) (does not draw), (Data Line DL) (does not draw) and a plurality of thin film transistor (TFT) (TFT) (not drawing) a plurality of data signal line.Data signal line and scan signal wire and intersect vertically with the form of array, and many scan signal wire and many data signal lines define a plurality of pixel regions.Each pixel region a pair ofly scans signal wire and adjacent a pair of data signal line is defined by adjacent, and have a thin film transistor (TFT) in each pixel region (not drawing) and a pixel electrode 216.Thin film transistor (TFT) is in order to selectivity switch on pixel electrode 214.Alignment films 212 is arranged between first substrate 210 and the liquid crystal layer 240, obtains uniform picture in order to control liquid crystal molecule 242 folk prescriptions to orientation.Simultaneously, alignment films 212 can provide tilt angle to give liquid crystal molecule 242, and 242 pairs of quick folk prescriptions of external electromagnetic field of control liquid crystal molecule improve the integral body demonstration image quality of display panels to reaction.The main material of alignment films 212 is a macromolecule resin material, for example be pi (PolyImide, PI).The second substrate tool 220 has the first color rete 221, the second color rete 222, common electrode 224 and alignment films 226.Alignment films 226 is arranged between second substrate 220 and the liquid crystal layer 240, in order to control liquid crystal molecule 242 folk prescriptions to being orientated and providing tilt angle.Then, liquid crystal layer 240 is sealed between first substrate 210 and second substrate 220, to form display panels.Liquid crystal layer 240 has a plurality of liquid crystal molecules 242 and a plurality of photo-sensitive monomer 244, and the chemical formula of photo-sensitive monomer can be:
Be noted that, the display panels of organizing behind first substrate 210 and second substrate 220 is comprised first pixel 251 and second pixel 252 at least.Utilization puts on the voltage swing of pixel electrode 214 and common electrode 224, and the orientation of the liquid crystal molecule 242 in the liquid crystal layer 240 is changed to some extent, and then changes the polarization direction by the light of liquid crystal layer 240.Light by liquid crystal layer 240 penetrates respectively after the first color rete 221 and the second color rete 222, demonstrates first color and second color.Preferably, display panels comprises that also the 3rd pixel 253, the second substrates 220 also comprise the 3rd color rete 223, and light penetration the 3rd color rete 223 by liquid crystal layer 240 demonstrates the 3rd color.It is red, green and blue that first color, second color and the 3rd color can be respectively, full-color in order to be combined into.In the present embodiment, to have first pixel 251, second pixel 252 and the 3rd pixel 253 with display panels be that example explains to Fig. 5 A.
Then, shown in step S204 and Fig. 5 B, drive first pixel 251 and second pixel 252 accordingly with first voltage and second voltage.Preferably, first voltage 251 and second voltage, 252 differences, and first voltage and second voltage are approximately between 0 volt to 17 volts.In addition, display panels also comprises the 3rd pixel 253, so this step also comprises, drives the 3rd pixel 253 with tertiary voltage.Preferably, wherein first voltage, second voltage and tertiary voltage difference, and first voltage, second voltage and tertiary voltage are approximately between 0 volt to 40 volts.When voltage is put on pixel, can be subjected to electric field influence and rotate being a special angle with respect to the liquid crystal molecule 242 of pixel region.When first voltage was put on first pixel 251, liquid crystal molecule 242 can be subjected to electric field influence and rotate and be a special angle, can be driven by liquid crystal molecule with respect to the photo-sensitive monomer 244 of first pixel this moment and was equal angular and arranges.Similarly, when second voltage and tertiary voltage are put on second pixel 252 and the 3rd pixel 253 respectively, can be driven by liquid crystal molecule and special angle is arranged with respect to the photo-sensitive monomer 244 of second pixel 252 and the 3rd pixel 253.Because it is first voltage, second voltage and tertiary voltage difference, also inequality with respect to the anglec of rotation of the liquid crystal molecule of first pixel 251, second pixel 252 and the 3rd pixel 253 and photo-sensitive monomer.
Preferably, the original gamma electric voltage curve (Gamma Voltage curve) according to first pixel 251, second pixel 252 and the 3rd pixel 253 preestablishes driving voltage.For instance, if first pixel 251 be red pixel (R), be red rete just as if the first color rete 221, between first voltage between common electrode 224 and the pixel electrode 214 approximately between 0.5 volt to 33 volts.If first pixel 251 is green pixel (G), first voltage is approximately between 1 volt to 35 volts.If first pixel is blue pixel (B), first voltage is approximately between 1.5 volts to 37 volts.
Be noted that,, also can carry out in regular turn with first driven, first pixel 251, with second driven, second pixel 252 and drive the 3rd pixel 253 with tertiary voltage and can carry out simultaneously.
At last, shown in step S206 and Fig. 5 C,, make a little photo-sensitive monomers 244 on first substrate 210 and second substrate 220, aggregate into a plurality of orientated polymers 246 with the ultraviolet source irradiation display panels.Preferably about 1000 dusts of orientated polymer 246
When applying first voltage, second voltage and tertiary voltage, 242 one-tenth special angles of photo-sensitive monomer 244 and liquid crystal molecule are arranged, and photo-sensitive monomer 244 moves to the surface of first substrate 210 and second substrate 220 gradually, and under UV-irradiation, photo-sensitive monomer 244 aggregates into orientated polymer 246.Preferably, remove first voltage, second voltage and tertiary voltage, liquid crystal molecule 242 is subjected to the influence of orientated polymer 246, corresponding to first pixel 251, second pixel 252 and the 3rd pixel 253, present different tilt angles, finish display panels 200 by this, shown in Fig. 5 D.Thus, the orientated polymer 246 of polymerization under specific voltage has fixing molecular orientation, helps liquid crystal molecule 242 to arrange again conversely, makes the liquid crystal molecule 242 of pixel have specific tilt angle.Particularly in previous step is rapid, apply different predeterminated voltages when the different color pixel, can make the liquid crystal molecule of different color pixel have different tilt angles.When applying same electrical and be pressed on the different color pixel, each color pixel all can present identical penetrability, that is to say, (Voltage-Transmittance Curve, V-T curve) is identical for the driving voltage of each color pixel and light transmittance graph of a relation.By this, the display panels of present embodiment has the gamma correction function.When being image data, digital data conversion do not have the problem of color distortion.
Disclosed display panels of the above embodiment of the present invention and manufacture method thereof have the orientated polymer that is polymerized by photo-sensitive monomer in its liquid crystal layer, make the display panels of present embodiment have the gamma correction function.Thus, (Voltage-Transmittance Curve, V-T curve) is identical for the driving voltage of each color pixel and penetrance graph of a relation, does not have the problem of color distortion when digital data conversion is image data.In addition, this manufacture method only in manufacture process, is added photo-sensitive monomer in liquid crystal layer, and is applied different magnitudes of voltage in the different color pixel, again with the ultraviolet source irradiation panel.Step is easy can not to increase manufacturing cost.
In sum; though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; those skilled in the art without departing from the spirit and scope of the present invention; can do a little change and retouching, thus protection scope of the present invention should with accompanying Claim the person of being defined be as the criterion.
Claims (21)
1. the manufacture method of a display panels comprises:
One display panels is provided, this display panels comprises one first substrate, one second substrate and a liquid crystal layer, this first substrate and this second substrate have an alignment films respectively, wherein this liquid crystal layer comprises that a plurality of photo-sensitive monomers and a plurality of liquid crystal molecule are sealed between this first substrate and this second substrate, this display panels has at least one first pixel and one second pixel, wherein said photo-sensitive monomer comprises at least one among the following three
N and m are positive integer, and n=1 or 2, m=2;
Drive this first pixel and this second pixel accordingly with one first voltage and one second voltage; And
With this display panels of a ultraviolet source irradiation, make those photo-sensitive monomers on this first substrate and this second substrate, aggregate into a plurality of orientated polymers, make the pixel of winning different with the tilt angle of second pixel.
2. the manufacture method of display panels as claimed in claim 1, wherein this display panels also has one the 3rd pixel, and this method also comprises:
Drive the 3rd pixel with a tertiary voltage.
3. the manufacture method of display panels as claimed in claim 2, wherein this first voltage, this second voltage and this tertiary voltage difference.
4. the manufacture method of display panels as claimed in claim 2, wherein this first voltage, this second voltage and this tertiary voltage are between 0 volt to 40 volts.
5. the manufacture method of display panels as claimed in claim 4, wherein this first voltage, this second voltage and this tertiary voltage difference.
6. the manufacture method of display panels as claimed in claim 1, wherein with this first pixel of this first driven and with this second pixel of this second driven for carrying out simultaneously.
7. the manufacture method of display panels as claimed in claim 1 wherein is execution in regular turn with this first pixel of this first driven and with this second pixel of this second driven.
8. the manufacture method of display panels as claimed in claim 1, wherein this first pixel is a red pixel, this first voltage is between 0.5 volt to 33 volts.
9. the manufacture method of display panels as claimed in claim 1, wherein this first pixel is a green pixel, this first voltage is between 1 volt to 35 volts.
10. the manufacture method of display panels as claimed in claim 1, wherein this first pixel is a blue pixel, this first voltage is between 1.5 volts to 37 volts.
11. the manufacture method of display panels as claimed in claim 1, wherein this first voltage and this second voltage difference.
12. the manufacture method of display panels as claimed in claim 1, wherein this first voltage and this second voltage are between 0 volt to 17 volts.
13. the manufacture method of display panels as claimed in claim 12, wherein this first voltage and this second voltage difference.
14. the manufacture method of a display panels comprises;
One first substrate and one second substrate are provided, and this first substrate and this second substrate have an alignment films respectively;
One liquid crystal layer is sealed between this first substrate and this second substrate, to form a display panels, this liquid crystal layer has a plurality of liquid crystal molecules and a plurality of photo-sensitive monomer, this display panels has one first pixel, one second pixel and one the 3rd pixel, wherein those photo-sensitive monomers comprise at least one among the following three
N and m are positive integer, and n=1 or 2, m=2;
Drive this first pixel, this second pixel and the 3rd pixel accordingly with one first voltage, one second voltage and a tertiary voltage, wherein this first voltage, this second voltage and this tertiary voltage are incomplete same;
With this display panels of a ultraviolet source irradiation, make those photo-sensitive monomers on this first substrate and this second substrate, aggregate into a plurality of orientated polymers, make the pixel of winning, second pixel different with the tilt angle of the 3rd pixel; And
Remove this first voltage, this second voltage and this tertiary voltage.
15. manufacture method as claimed in claim 14, wherein with this first pixel of this first driven, with this second pixel of this second driven and drive the 3rd pixel with this tertiary voltage and carry out simultaneously.
16. method as claimed in claim 14, wherein with this first pixel of this first driven, with this second pixel of this second driven and drive the 3rd pixel with this tertiary voltage and carry out in regular turn.
17. manufacture method as claimed in claim 14, wherein this first pixel is a red pixel, and this first voltage is between 0.5 volt to 33 volts.
18. manufacture method as claimed in claim 14, wherein this this first pixel is a green pixel, and this first voltage is between 1.0 volts to 35 volts.
19. manufacture method as claimed in claim 14, wherein this first pixel is a blue pixel, and this first voltage is between 1.5 volts to 37 volts.
20. manufacture method as claimed in claim 14, wherein this first voltage, this second voltage and this tertiary voltage are inequality.
21. manufacture method as claimed in claim 14, wherein this first voltage, this second voltage and this tertiary voltage are between 0 volt to 17 volts.
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| CNB2005100794257A CN100442110C (en) | 2005-06-21 | 2005-06-21 | Method for fabricating faceplate of liquid crystal display |
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| CNB2005100794257A CN100442110C (en) | 2005-06-21 | 2005-06-21 | Method for fabricating faceplate of liquid crystal display |
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| CN100442110C true CN100442110C (en) | 2008-12-10 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI338804B (en) | 2006-08-14 | 2011-03-11 | Au Optronics Corp | Liquid crystal display sheet |
| CN100406983C (en) * | 2006-09-07 | 2008-07-30 | 友达光电股份有限公司 | Motherboard of liquid crystal display |
| TWI329774B (en) | 2007-04-13 | 2010-09-01 | Au Optronics Corp | Liquid crystal display panel |
| TWI336017B (en) | 2007-10-24 | 2011-01-11 | Au Optronics Corp | Method for manufacturing liquid crystal display |
| TWI384298B (en) | 2008-10-09 | 2013-02-01 | Au Optronics Corp | Liquid crystal display panel and manufacturing method thereof |
| CN101840098B (en) * | 2008-10-22 | 2013-08-14 | 友达光电股份有限公司 | Liquid crystal display panel and manufacture method thereof |
| CN105778928B (en) * | 2011-08-31 | 2018-06-08 | Jsr株式会社 | Manufacturing method, aligning agent for liquid crystal, liquid crystal orientation film and the liquid crystal display element of liquid crystal display element |
| CN105842897B (en) * | 2016-05-30 | 2019-01-29 | 深圳市华星光电技术有限公司 | Motherboard of liquid crystal display and its alignment method |
| CN114265246A (en) * | 2021-12-20 | 2022-04-01 | Tcl华星光电技术有限公司 | Display device |
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| CN1116722A (en) * | 1993-09-18 | 1996-02-14 | 株式会社金星社 | Method for forming an orientation film of photopolymer in a liquid crystal display |
| US6014194A (en) * | 1997-08-01 | 2000-01-11 | Industrial Technology Research Institute | Forming polymer networks with red, green and blue sub-pixels by applying different bias voltages while exposed to a UV light |
| US6157425A (en) * | 1997-08-01 | 2000-12-05 | Industrial Technology Research Institute | Low color dispersion liquid crystal display |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116722A (en) * | 1993-09-18 | 1996-02-14 | 株式会社金星社 | Method for forming an orientation film of photopolymer in a liquid crystal display |
| US6014194A (en) * | 1997-08-01 | 2000-01-11 | Industrial Technology Research Institute | Forming polymer networks with red, green and blue sub-pixels by applying different bias voltages while exposed to a UV light |
| US6157425A (en) * | 1997-08-01 | 2000-12-05 | Industrial Technology Research Institute | Low color dispersion liquid crystal display |
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