CN1493904A - Using liquid crystal optical film to make optical compensated semi penetrating reflective type liquid crystal display - Google Patents
Using liquid crystal optical film to make optical compensated semi penetrating reflective type liquid crystal display Download PDFInfo
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- CN1493904A CN1493904A CNA021503079A CN02150307A CN1493904A CN 1493904 A CN1493904 A CN 1493904A CN A021503079 A CNA021503079 A CN A021503079A CN 02150307 A CN02150307 A CN 02150307A CN 1493904 A CN1493904 A CN 1493904A
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Abstract
A semitransmission-reflection LCD using optical LC film for optical compensation features that a mixed torsional nematic mode is used as its reflection mode and the optical LC film is used for the compensation of transmissive mode. On the basis of existing technology for preparing the reflection-type film transistor, the orientation angle of orientation film is changed to make the included angle between upper and lower substrates be 60-90 deg and the spacer is used to make the gap between them be less than 4 mm to form its LC box in mixed torsional nematic mode. Then, the compensating LC film is stuck on the back of basic glass plate containing the film transistor array and reflecting plate.
Description
Technical field
The invention relates to a kind of use liquid crystal optics film (LC film) and do the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD), be meant that especially a kind of employing mixed type nematic mode (MTN mode) works as reflective-mode, and penetrate compensation with liquid crystal optics film (LC film), on Thin Film Transistor-LCD (TFT LCD), penetrate and the active LCD of half-penetrating reflective (AM LCD) that reflects the problem of can't and deposit to solve mixed type nematic mode (MTNN mode).
Background technology
Existing half-penetrating reflective Thin Film Transistor-LCD (TFT LCD) has its difficulty in the selection of liquid crystal mode.Therefore up to the present, in existing numerous technology, preferable reflective-mode is to be mixed type twisted nematic facies model (Mixed-mode TN, the Wu Shicong professor proposes), but the optical phase difference of the desired liquid crystal cell of this pattern (delta nd) is between 0.250-0.300 micron (μ m), and torsion angle less than 90 degree are so can't take into account the pattern of penetrating (being that delta nd is positioned at first or secondminima).
And the improvement mode of Hewlett-Packard (Sharp), be to be utilization acryl resin (acrylic resin) pack portion zone in the liquid crystal cell, make to have two kinds of different gaps (cellgap) in its liquid crystal cell, one for the reflective-mode use, and another then uses for penetrating pattern.Though this kind improvement mode can be produced the Thin Film Transistor-LCD (TFTLCD) of half-penetrating reflective smoothly, processing procedure is very complicated, and yield descends, and need abandon the mixed type twisted nematic facies model (MTN mode) of reflective-mode the best.
This shows that above-mentioned prior art still has many disappearances and deficiency, real non-one kindhearted design, and demand urgently being improved.
This case inventor supervises the every shortcoming and the deficiency of being derived in the selection of above-mentioned existing half-penetrating reflective Thin Film Transistor-LCD (TFTLCD) at liquid crystal mode, be urgently to think to be improved innovation, and behind hammer away for many years, successfully research and development are finished this part and are used liquid crystal optics film (LCfilm) to do the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AMLCD) finally.
Summary of the invention
Purpose of the present invention promptly is to provide a kind of use liquid crystal optics film (LC film) to do the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AMLCD), be to adopt mixed type twisted nematic facies model (MTNN mode) to work as reflective-mode, and penetrate compensation with liquid crystal optics film (LCfilm), on Thin Film Transistor-LCD (TFT LCD), penetrate and reflect the problem of can't and deposit to solve mixed type twisted nematic facies model (MTN mode), and can have best reflection performance.
Of the present invention time a purpose is to be to provide a kind of use liquid crystal optics film (LC film) to do the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AIM LCD), can not be used in the liquid crystal cell and make double gap (dual cellgap) accurately, processing procedure is simplified with acryl resin (acrylic resin).
Another object of the present invention is to be to provide a kind of use liquid crystal optics film (LC film) to do the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AML CD), this liquid crystal cell processing procedure and existing penetration liquid crystal cell processing procedure are much at one, different place only is the utilization of blooming, even so, but can have preferable reflecting effect by existing processing procedure.
Can reach the use liquid crystal optics film (LC film) of foregoing invention purpose and do the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD), its primary structure: be with liquid crystal cell (mixed type twisted nematic facies model (MTN mode), example: reverse 80 degree, optical phase difference (delta nd)=0.280 micron (μ m) cooperates the use of internal reflection semi-permeable diaphragm and liquid crystal optics film (LC film).This reflective-mode is a mixed type twisted nematic facies model (MTNmode), the pattern that penetrates is then compensated by liquid crystal optics film (LC film), the torsion angle of blooming is identical with liquid crystal cell (LC cell) and sense of rotation is opposite, make the whole pattern that penetrates as double-deck twisted nematic phase (Double-layer TN), to obtain the effect of semi-penetrate through reflective.
Description of drawings
See also the detailed description and the accompanying drawing thereof of following relevant a preferred embodiment of the present invention, can further understand technology contents of the present invention and purpose effect thereof; The accompanying drawing of relevant this embodiment is:
Fig. 1 does the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) in the structural sheet synoptic diagram of black matrix pattern (normalliy blackmode) for the present invention uses liquid crystal optics film (LC film);
Fig. 2 does the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) in the structural sheet synoptic diagram of white background pattern (normalliy whitemode) for the present invention uses liquid crystal optics film (LC film);
Fig. 3 makees the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) penetrates the voltage-transmittance graph (V-T curve) of pattern in black matrix analog result synoptic diagram for the present invention uses liquid crystal optics film (LC film);
Fig. 4 makees the analog result synoptic diagram of the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) in the voltage-reflectance curve (V-R curve) of black matrix reflective-mode for the present invention uses liquid crystal optics film (LC film);
Fig. 5 makees the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) penetrates the voltage-transmittance graph (V-T curve) of pattern in white background analog result synoptic diagram for this use liquid crystal optics film (LC film); And
Fig. 6 makees the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) penetrates the voltage-reflectance curve (V-R curve) of pattern in white background analog result synoptic diagram for this use liquid crystal optics film (LC film).
Embodiment
See also Fig. 1, for use liquid crystal optics film provided by the present invention (LC film) is made the structural sheet synoptic diagram of the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) in black matrix pattern (normalliy black mode), structure 1 in black matrix pattern (normalliyblackmode), mainly include: polaroid 11 up and down, 12, go up lower-glass 13,14, liquid crystal cell 15, half reflection plate 16,17 compositions of liquid crystal optics film (LC film); This liquid crystal cell 15, be by last lower-glass 13,14 coat, contain colored filter (color filter), interior half reflection film and thin film transistor (TFT) array (TFT array), this liquid crystal mode is mixed type twisted nematic facies model (MTN mode), and its torsion angle (twist angle) is left-handed 60-90 degree, optical phase difference (delta nd)=0.250.300 micron (μ m), top layer liquid crystal guide shaft direction and polaroid light transmission shaft angle β=0-20 degree, cel-gap d=2-4um.This liquid crystal optics film (LC film) 17 forms for liquid crystal polymer (LC polymer) manufacturing, wherein the parameter of this liquid crystal optics film (LC film) 17 is a dextrorotation 60-90 degree, optical phase difference (delta nd)=0.250-0.300 micron (μ m), axle becomes 90 degree on it with the following alignment direction of liquid crystal, and following polaroid 12 and last polaroid 11 quadratures.
See also Fig. 2, for use liquid crystal optics film provided by the present invention (LC film) is made the structural sheet synoptic diagram of the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD) in white background pattern (normalliy white mode), when the structure 2 of white background pattern (normalliy whitemode), mainly include: up and down polaroid 21,22, up and down quarter wave plate 23,24, go up lower- glass 25,26, liquid crystal cell 27, half reflection plate 28,29 compositions of liquid crystal optics film (LC film); This liquid crystal cell 27, be by 25,26 coatings of last lower-glass, contain colored filter (color filter), interior half reflection film and thin film transistor (TFT) array (TFT array), this liquid crystal mode is mixed type twisted nematic facies model (MTN mode), its torsion angle (twist angle) is left-handed 60-90 degree, optical phase difference (delta nd)=0.250-0.300 micron (μ m), β=0-20 degree, cel-gap d=2-4 micron (μ m).This liquid crystal optics film (LC film) 29 forms for liquid crystal polymer (LC polymer) manufacturing, wherein the parameter of this liquid crystal optics film (LC film) 29 is a dextrorotation 60-90 degree, optical phase difference (delta nd)=0.250-0.300 micron (μ m), axle becomes 90 degree on it with the following alignment direction of liquid crystal, and following polaroid 12 and last polaroid 11 quadratures.
The present invention utilizes existing reflective thin film transistor (TFT) (TFT) process technique, change the orientation angle of alignment film, on making, infrabasal plate orientation angle is the 60-90 degree, be in the son control between use, the infrabasal plate spacing is below 4 microns (μ m), form typical hybrid type twisted nematic phase liquid crystal cell (MTN cell), stick the optical compensation films of making by liquid crystal polymer (STN film) afterwards in the internal reflection glass sheet back side, utilize the similar mode of double-deck STN (Double-layer STN), on, following polaroid orthogonal configuration, reach dark state desirable under the pattern of penetrating, improve contrast, form processing procedure simple half-penetration type mixed type twisted nematic facies model (MTN mode) display.
Illustrate: if with torsion angle 80 degree, top layer liquid crystal guide shaft direction and polaroid light transmission shaft angle β=20 degree, optical phase difference (Δ n*d)=0.272 micron (μ m) black matrix pattern (normalliy black mode) is an example, use the gap (cell gap) of 3 microns (μ m) on lower glass substrate, to plate the aluminium film (penetrating/reflection ratio) of 100-200A as semi-reflective layer with THICKNESS CONTROL light, last, two sheet glass inner faces are coated with alignment film down, on, orientation angular difference 80 degree on following two sides, stick identical with liquid crystal cell (MTN cell) parameter of mixed type twisted nematic facies model at the back side, reflection horizon, be opposite STN Super TN phase (STN) compensate film of torsion angle direction, on, descend two polaroid light transmission shaft quadratures and make β=20 degree, can draw analog result as Fig. 3 (black matrix penetrates pattern V-T curve) and Fig. 4 (black matrix penetrates pattern V-R curve); If between the liquid crystal cell (MTN cell) of last polaroid and mixed type twisted nematic facies model and time polaroid and STN Super TN respectively add one 1/4 wave plate mutually between liquid crystal optics film (STN film), β is respectively 20 degree and 50 degree then can make display mode become white background (nomally white), can draw the analog result as Fig. 5 (white background penetrates pattern V-T curve) and Fig. 6 (white background penetrates pattern V-Rcurve).
Use liquid crystal optics film provided by the present invention (LC film) is done the active LCD of the half-penetrating reflective that penetrates the pattern optical compensation (AM LCD), when comparing mutually with other prior aries, has more following advantage:
One, this structure not be used in the liquid crystal cell (LC cell) and makes double gap (dual cellgap) accurately with acryl resin (acrylic resin), and processing procedure is simplified.
Two, liquid crystal cell of the present invention (cell) processing procedure and existing penetration liquid crystal cell (cell) processing procedure much at one, different place only is the utilization of blooming, even so, but can have preferable reflecting effect by existing processing procedure.
Three, the reflective-mode that the present invention cooperated adopts mixed type twisted nematic facies model (MTNmode), is to have best reflection performance.
Above-listed detailed description is at the specifying of one of the present invention possible embodiments, and only this embodiment is not in order to limiting claim of the present invention, does not allly break away from the equivalence that skill spirit of the present invention does and implements or change, all should be contained in the claim of this case.
Claims (2)
1. a half-penetrating reflective LCD of using the liquid crystal optics film to do optical compensation is characterized in that, when the black matrix pattern, is made up of lower-glass, a liquid crystal cell, half reflecting plate, a liquid crystal optics film on the polaroid, about in the of; This liquid crystal cell is coated by last lower-glass, contains colored filter, interior half reflection film and thin film transistor (TFT) array, and this liquid crystal mode is a mixed type twisted nematic facies model, and its torsion angle is left-handed 60-90 degree, optical phase difference=0.250-0.300 micron; This liquid crystal optics film forms for the liquid crystal polymer manufacturing, and wherein the parameter of this liquid crystal optics film is a dextrorotation 60-90 degree, optical phase difference=0.250-0.300 micron, and axle becomes 90 degree on it with the following alignment direction of liquid crystal; The present invention utilizes existing reflective thin film transistor (TFT) process technique, change the orientation angle of alignment film, on making, infrabasal plate orientation angle is the 60-90 degree, be in the son control between use, the infrabasal plate spacing is below 4 microns, form the liquid crystal cell of typical hybrid type twisted nematic facies model, stick the optical compensation films of making by the liquid crystal extracting mixture in the internal reflection glass sheet back side afterwards, utilize the similar mode of double-layer ultra-torsion nematic phase liquid crystal display, on, following polaroid orthogonal configuration, reach dark state desirable under the pattern of penetrating, improve contrast, form the simple half-penetration type mixed type of processing procedure twisted nematic facies model display.
2. half-penetrating reflective LCD of using the liquid crystal optics film to do optical compensation, it is characterized in that, when the white background pattern, by polaroid about in the of, about in the of one on the quarter wave plate, a lower-glass, a liquid crystal cell, half reflecting plate, a liquid crystal optics film formed; This liquid crystal cell is coated by last lower-glass, contains colored filter, interior half reflection film and thin film transistor (TFT) array, and this liquid crystal mode is a mixed type twisted nematic facies model, and its torsion angle is left-handed 60-90 degree, optical phase difference=0.250-0.300 micron; This liquid crystal optics film forms for the liquid crystal polymer manufacturing, and wherein the parameter of this liquid crystal optics film is a dextrorotation 60-90 degree, optical phase difference=0.250-0.300 micron, and axle becomes 90 degree on it with the following alignment direction of liquid crystal; The present invention utilizes existing reflective thin film transistor (TFT) array process technique, change the orientation angle of alignment film, on making, infrabasal plate orientation angle is the 60-90 degree, be in the son control between use, the infrabasal plate spacing is below 4 microns, form the liquid crystal cell of typical hybrid type twisted nematic facies model, stick the optical compensation films of making by liquid crystal polymer in the internal reflection glass sheet back side afterwards, utilize the mutually similar mode of double-layer ultra-torsion nematic, on, following polaroid orthogonal configuration, reach dark state desirable under the pattern of penetrating, improve contrast, form the simple half-penetration type mixed type of processing procedure twisted nematic facies model display.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021503079A CN1493904A (en) | 2002-10-30 | 2002-10-30 | Using liquid crystal optical film to make optical compensated semi penetrating reflective type liquid crystal display |
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| CNA021503079A CN1493904A (en) | 2002-10-30 | 2002-10-30 | Using liquid crystal optical film to make optical compensated semi penetrating reflective type liquid crystal display |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426083C (en) * | 2004-12-29 | 2008-10-15 | 乐金显示有限公司 | Polarizer for compensation of gravity defect in liquid crystal display device |
| CN101424820B (en) * | 2006-08-01 | 2010-09-01 | 友达光电股份有限公司 | Semi-penetrating semi-reflective liquid crystal display device |
| CN101206349B (en) * | 2006-12-21 | 2011-03-30 | 富士胶片株式会社 | Liquid crystal display device |
| WO2015196591A1 (en) * | 2014-06-26 | 2015-12-30 | 京东方科技集团股份有限公司 | Flexible film, organic light-emitting diode display panel and display apparatus |
-
2002
- 2002-10-30 CN CNA021503079A patent/CN1493904A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426083C (en) * | 2004-12-29 | 2008-10-15 | 乐金显示有限公司 | Polarizer for compensation of gravity defect in liquid crystal display device |
| CN101424820B (en) * | 2006-08-01 | 2010-09-01 | 友达光电股份有限公司 | Semi-penetrating semi-reflective liquid crystal display device |
| CN101206349B (en) * | 2006-12-21 | 2011-03-30 | 富士胶片株式会社 | Liquid crystal display device |
| WO2015196591A1 (en) * | 2014-06-26 | 2015-12-30 | 京东方科技集团股份有限公司 | Flexible film, organic light-emitting diode display panel and display apparatus |
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