Liquid crystal indicator
Technical field
The present invention relates to a kind of flat display apparatus, particularly relate to a kind of liquid crystal indicator that can increase the color saturation of LCD device.
Background technology
Along with the progress of electronics technology, the accompanied electronic product is in vogue especially in daily life, is to increase day by day for the demand of the display device compact, that power consumption is low.Wherein, LCD (Liquid crystal Display, LCD) low with its power consumption, thermal value is few, in light weight and non-radiation type or the like advantage, be used in already in the electronic product miscellaneous, and little by little replace traditional CRT display (Cold Cathode Ray Tube Display, CRTDisplay).
Seeing also shown in Figure 1ly, is a synoptic diagram of existing known liquid crystal indicator.This liquid crystal indicator 1 mainly has a backlight 11, one first Polarizer 12, one second Polarizer 13, a pair of substrate 14,14 ', a liquid crystal layer 15 and a colored filter 16.Wherein, backlight 11 luminous light select through first Polarizer 12, allow the light of one first predetermined direction can be by accompanying liquid crystal layer 15 electrode layer 14,14 ' therebetween.By whether driving liquid crystal layer 15 interior liquid crystal molecules, can change the arrangement mode of liquid crystal molecule, whether can arrive at second Polarizer 13 with control light, allow the light of one second predetermined direction pass through, to enter the colored filter 16 that is arranged on the glass substrate 17.The phenomenon of utilizing human eye vision to persist, after light was respectively by R, G on the colored filter 16, B picture element, human eye can obtain colour picture.
In conventional art, mainly be that (Cold Cathode FluorescentLamp CCFL) is used as the backlight 11 of liquid crystal indicator 1 with cold cathode fluorescent lamp.As shown in Figure 2, be the synoptic diagram that shows the cold cathode fluorescent lamp of existing known techniques.The cold cathode fluorescent lamp 20 of existing known techniques comprises a glass tube 21, and the inwall that two ends in this glass tube 21 respectively are provided with an electrode layer 22, glass tube 21 then evenly is being coated with fluorescent layer (Phosphor Layer) 23.In the glass tube 21 be filled with mercury vapor and mix blunt gas (for example: the mixed gas of xenon, argon), as discharge medium (DischargeMedium).When lighting, electrode layer 22 connects power supply and disengages electronics via lead 221, and electronics quickens to collide the discharge medium of glass tube inside through electric field, makes discharge medium be in excite state, disengages ultraviolet light then to get back to ground state.Wherein, the ultraviolet light that discharge medium discharged then can be absorbed by the fluorescent layer 23 of glass tube inside, and sends visible light.
Yet when utilizing cold cathode fluorescent lamp 20 as backlight, its luminous frequency spectrum (Spectrum) is as shown in Figure 3, and Fig. 3 is the synoptic diagram that shows the luminous spectrogram of the cold cathode fluorescent lamp that has known techniques now.Three main crests are parted on the right side the frequency band at three coloured light places such as not representing blue, green and redness by a left side.By among the figure as can be known, in the visible light that phosphor body ejected by cold cathode fluorescent lamp, also be mixed with his coloured light (as arrow indication place among Fig. 3, it is to be less important crest) except red bluish-green three looks.Wherein, the crest between red light and green light (its wavelength coverage is about 560nm-590nm) usually as long as in the cold cathode fluorescent lamp 20 existence of mercury vapour is arranged, when adding the existing of green fluorescent body, promptly can produce this less important crest.And, tend to make that the ruddiness of cold cathode fluorescent lamp and the purity of green glow reduce, and then cause the color saturation (Color Saturation) of liquid crystal indicator to descend.
This shows that above-mentioned existing liquid crystal indicator obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.Therefore, how providing a kind of can during as backlight, reduce the liquid crystal indicator that his coloured light enters human eye at cold cathode fluorescent lamp, is a big problem in fact, also obviously is the problem of the anxious desire solution of relevant dealer.
Because the defective that above-mentioned existing liquid crystal indicator exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of liquid crystal indicator of new structure, can improve general existing liquid crystal indicator, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing liquid crystal indicator exists, and a kind of liquid crystal indicator of new structure is provided, technical matters to be solved is to make its color saturation that can increase LCD device, thereby is suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of liquid crystal indicator that the present invention proposes, it comprises a colored filter, and this colored filter is to be doped with a frequency spectrum absorbing material, and this frequency spectrum absorbing material is to have an absorption peak at least between optical wavelength 560-590nm.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid liquid crystal indicator, wherein said frequency spectrum absorbing material is to be neodymia.
Aforesaid liquid crystal indicator, wherein said colored filter is to have a black matrix" and plural chromatic photoresist, this black matrix" is to define plural sub picture element zone, and these chromatic photoresists are to be formed on these sub picture element zones and this black matrix" of covering part.
Aforesaid liquid crystal indicator, wherein said frequency spectrum absorbing material are to be doped at least one these chromatic photoresists.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to achieve the above object, the invention provides a kind of liquid crystal indicator, it comprises a colored filter, it is characterized in that colored filter is to be doped with a frequency spectrum absorbing material, the frequency spectrum absorbing material is to have an absorption peak at least between optical wavelength 560-590nm.
By technique scheme, liquid crystal indicator of the present invention has following advantage at least: from the above, because according to liquid crystal indicator of the present invention, it is characterized in that colored filter is doped with a frequency spectrum absorbing material, can absorb the optical wavelength of 560nm to 590nm, just the allochromatic colour light wavelength outside redness, green, the blueness.Compared with prior art, liquid crystal indicator of the present invention is to be doped with the frequency spectrum absorbing material at colored filter, absorbing his coloured light, thus can promote the color saturation of liquid crystal indicator, and then can promote consumer's desire to buy, promote the sale of product.
In sum, the liquid crystal indicator of special construction of the present invention, can increase the color saturation of LCD device, no matter it all has bigger improvement on product structure or function, have large improvement technically, thereby being suitable for practicality more, and having the extensive value of industry, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the synoptic diagram that shows the liquid crystal indicator of existing known techniques.
Fig. 2 is the synoptic diagram that shows the cold cathode fluorescent lamp of existing known techniques.
Fig. 3 is the synoptic diagram that shows the luminous spectrogram of the cold cathode fluorescent lamp that has known techniques now.
Fig. 4 is the synoptic diagram that shows according to the liquid crystal indicator of preferred embodiment of the present invention.
Fig. 5 is the synoptic diagram that shows according to the colored filter of the liquid crystal indicator in the preferred embodiment of the present invention.
Fig. 6 shows according in the preferred embodiment of the present invention the synoptic diagram of the light absorption spectrogram of frequency spectrum absorbing material S.
1: liquid crystal indicator 11: backlight
13: the second Polarizers of 12: the first Polarizers
14,14 ': substrate 15: liquid crystal layer
16: colored filter 17: glass substrate
20: cold cathode fluorescent lamp 21: glass tube
22: electrode layer 221: lead
23: fluorescent layer 30: liquid crystal indicator
31: colored filter 311: black matrix"
312: chromatic photoresist 313: transparency carrier
314: 32: the first Polarizers of nesa coating
Polarizer 34 in 33: the second, and 34 ': substrate
35: liquid crystal layer 40: module backlight
41: fluorescent tube 50: the liquid crystal panel module
R, G, B: picture element S: frequency spectrum absorbing material
A-A ': straight line
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of liquid crystal indicator, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Below see also Fig. 4 to shown in Figure 6, with the liquid crystal indicator of explanation according to preferred embodiment of the present invention.
Seeing also shown in Figure 4ly, is the synoptic diagram that shows according to the liquid crystal indicator of preferred embodiment of the present invention.The liquid crystal indicator 30 of preferred embodiment of the present invention comprises a colored filter 31, it is characterized in that: colored filter 31 is to be doped with a frequency spectrum absorbing material S, and this frequency spectrum absorbing material S has an absorption peak at least between optical wavelength 560-590nm.
Seeing also shown in Figure 5ly, is the synoptic diagram that shows according to the colored filter of the liquid crystal indicator in the preferred embodiment of the present invention.In the present embodiment, this colored filter 31, have a black matrix" 311 (Black Matrix) and plural chromatic photoresist 312, wherein, black matrix" 311 is to define plural sub picture element zone (R, G, B), chromatic photoresist 312 is to be formed at sub picture element zone (R, G, B) go up and cover partly black matrix" 311, and frequency spectrum absorbing material S is doped at least one chromatic photoresist 312.For example, frequency spectrum absorbing material S is with neodymia (Nd
2O
3) when being example, can respectively it be doped in respectively in green photoresistance and the red photoresistance.
In the present embodiment, black matrix" 311 and chromatic photoresist 312 are can be arranged on the transparency carrier 313, utilize a nesa coating 314 to coat black matrix" 311 and chromatic photoresist 312 again.Usually, the material of black matrix" 311 is to be chromium or chromium oxide, and chromatic photoresist 312 then is to add color dye or dyestuff in resin, adds frequency spectrum absorbing material S and forms.
Please consult shown in Figure 4ly again, this liquid crystal indicator 30 more can comprise a module 40 backlight, and it is to have a fluorescent tube 41.
In addition, this liquid crystal indicator 30 more can comprise one first Polarizer 32, one second Polarizer 33, two substrates 34,34 ' and a liquid crystal layer 35.In the present embodiment, colored filter 31, first Polarizer 32, second Polarizer 33, two substrates 34,34 ' and liquid crystal layer 35 be to form a liquid crystal panel module (Liquid Crystal Panel Module) 50, module 40 backlight and liquid crystal panel module 50 are then formed liquid crystal indicator 30.
Module 40 backlight luminous light select through first Polarizer 32, allow the light of one first predetermined direction can be by accompanying liquid crystal layer 35 two substrates 34,34 ' therebetween.By whether driving liquid crystal layer 35 interior liquid crystal molecules, can change the arrangement mode of liquid crystal molecule, whether can arrive at second Polarizer 33 with control light, allow the light of one second predetermined direction pass through, to enter colored filter 31.The phenomenon of utilizing human eye vision to persist, after light was respectively by R, G on the colored filter 16, B picture element, human eye can obtain colour picture.
Seeing also shown in Figure 6ly, is to show according in the preferred embodiment of the present invention the synoptic diagram of the light absorption spectrogram of frequency spectrum absorbing material S.By among the figure as can be known, frequency spectrum absorbing material S has an absorption peak between optical wavelength 560-590nm.Therefore, after light enters colored filter 31, frequency spectrum absorbing material S on the colored filter 31 can absorb the absorption peak of his coloured light that is originally had between green glow and ruddiness, and then has reduced the light absorption value of his coloured light, so can increase the color saturation of liquid crystal indicator 30 of the present invention.
From the above, because according to liquid crystal indicator of the present invention, it is characterized in that colored filter is doped with a frequency spectrum absorbing material, can absorb the optical wavelength of 560nm to 590nm, allochromatic colour light wavelength outside just red, green, the blueness, compared with prior art, liquid crystal indicator of the present invention is to be doped with the frequency spectrum absorbing material at colored filter, to absorb his coloured light, so can promote the color saturation of liquid crystal indicator, and then can promote consumer's desire to buy, promote the sale of product.
The above is to be illustrative, but not is restricted.It below only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.