CN103838029A - Display device - Google Patents
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- CN103838029A CN103838029A CN201410054796.9A CN201410054796A CN103838029A CN 103838029 A CN103838029 A CN 103838029A CN 201410054796 A CN201410054796 A CN 201410054796A CN 103838029 A CN103838029 A CN 103838029A
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Abstract
The invention discloses a display device which comprises a first substrate, a second substrate, a liquid crystal layer filled between the first substrate and the second substrate, a first polarization layer and a second polarization layer, wherein the first polarization layer is arranged on the side, opposite to the liquid crystal layer, of the first substrate; the second polarization layer is arranged on the side, opposite to the liquid crystal layer, of the second substrate. The first polarization layer is a polarization beam splitting layer which enables polarization light to penetrate in a specific direction and reflects polarization light perpendicular to the polarization light in the specific direction. In the scheme, a linear polarizer in the first polarization layer located on the side, opposite to the liquid crystal layer, of the first substrate is replaced by the polarization beam splitting layer which enables the polarization light to penetrate in the specific direction and reflects the polarization light perpendicular to the polarization light in the specific direction, so that when a backlight source of the display device is not lit up, a screen will display a mirror surface effect by reflecting the environment polarization light in one direction, the screen enables the polarization light in another direction to penetrate and achieves an image display effect when the backlight source is lit up, and practicality and functionality of the display device are improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, relate in particular to a kind of display device.
Background technology
Along with the development of flat panel display, there is the LCD(Liquid Crystal Display of the advantages such as volume is little, low in energy consumption, radiationless, liquid crystal indicator) replace gradually cathode-ray tube (CRT) (Cathode Ray Tube, CRT) display device and become the main product in display device.
As shown in Figure 1, it is the structural representation of liquid crystal indicator described in prior art, described liquid crystal indicator can comprise color membrane substrates 11, array base palte 12, be filled in liquid crystal layer 13 between described color membrane substrates 11 and described array base palte 12, be arranged on described color membrane substrates 11 dorsad described liquid crystal layer 13 1 sides the first polarizing layer 14, be arranged on described array base palte 12 dorsad described liquid crystal layer 13 1 sides the second polarizing layer 15 and be positioned at the backlight module 16 under described the second polarizing layer 15.Particularly, described the first polarizing layer 14 and described the second polarizing layer 15 are conventionally by the simple line polaroid of direction transmission of natural light, a direction absorption is formed, and, polaroid in described the second polarizing layer 15 can be called as wilfully mating plate conventionally, and the polaroid in described the first polarizing layer 14 can be called as checking bias slice conventionally.
Particularly, as shown in Figure 2, in the time adopting this kind of structure, due in the time that the backlight in the backlight module 16 of described liquid crystal indicator is not lighted, P polarized light in polaroid transmissive surround lighting in described the first polarizing layer 14 the S polarized light in absorbing environmental light, and the P polarized light in described surround lighting can be absorbed by certain rete in described liquid crystal indicator, therefore, make now, the screen of described liquid crystal indicator is generally black light-absorbing surface, can't produce the effect that minute surface shows.
Summary of the invention
The embodiment of the present invention provides a kind of display device, while not lighting in order to solve the backlight when display device of current existence, cannot realize minute surface show problem.
A kind of display device, comprise first substrate, second substrate, be filled in liquid crystal layer between described first substrate and described second substrate, be arranged on described first substrate dorsad described liquid crystal layer one side the first polarizing layer and be arranged on described second substrate the second polarizing layer of described liquid crystal layer one side dorsad, wherein:
Described the first polarizing layer is polarization spectro layer, described polarization spectro layer can transmission along the polarized light of specific direction and reflection the polarized light perpendicular to described specific direction.
In technical scheme described in the embodiment of the present invention, due to be arranged in first substrate dorsad the line polaroid of the first polarizing layer of liquid crystal layer one side be replaced by can transmission specific direction polarized light (polarized light of described specific direction is generally P polarized light) and reflection perpendicular to the polarization spectro layer of the polarized light (the described polarized light perpendicular to described specific direction is generally S polarized light) of described specific direction, thereby, in the time that the backlight of display device is not lighted, screen can present mirror effect due to the environment polarized light of a direction of reflection, and in the time that the backlight of display device is lighted, screen can transmission other direction polarized light and realize the effect of picture disply, the practicality of raising display device and functional.
Further, described the second polarizing layer is the described polarization spectro layer that structure is identical with described the first polarizing layer, thereby can reach the interference of the polarized light perpendicular to described specific direction in further wiping out background light, the object of the better or picture display effect when further improving display device and normally showing of effect that minute surface is shown.
Further, described polarization spectro layer comprises reflection horizon; Wherein, described reflection horizon is formed by multilayer film, described multilayer film is alternately formed by the different bi-material of refractive index, to realize the effect of incident light being carried out to the light splitting (polarized light of transmission specific direction reflection are perpendicular to the polarized light of described specific direction) of different polarization direction by the mutual overlapping multi-layer film structure of high and low refractive index material.
Further, the described bi-material in described reflection horizon is respectively titania and silicon dioxide.
Further, described polarization spectro layer also comprises the protective seam that is positioned at both sides, described reflection horizon.
Further, described protective seam is transparent material, with on the basis that reaches good translucent effect, plays the object in the described reflection horizon of protection.
Further, between the refractive index of the bi-material of the refractive index of described transparent material in described reflection horizon, to reach the object of being convenient to draw materials and reducing material cost.
Further, described transparent material is glass.
Further, the protective seam in described polarization spectro layer is the corresponding first substrate of described polarization spectro layer or second substrate, to reduce on the basis of processing step, to reach the film layer structure of simplifying display device the object that reduces display device thickness.
Further, described display device is also provided with backlight, in described multilayer film, the thickness of every skim is 1/4 of predominant wavelength backlight that described backlight sends, to pile up by rete and the film layer structure of 1/4 predominant wavelength thickness produces the principle of anti-reflection film, so realize specific direction polarized light (P polarized light) complete transmission and perpendicular to the effect of reflection completely of the polarized light (S polarized light) of described specific direction.
Beneficial effect of the present invention is as follows:
The embodiment of the present invention provides a kind of display device, comprise first substrate, second substrate, be filled in liquid crystal layer between described first substrate and described second substrate, be arranged on described first substrate dorsad described liquid crystal layer one side the first polarizing layer and be arranged on described second substrate the second polarizing layer of described liquid crystal layer one side dorsad, wherein, described the first polarizing layer be can transmission along the polarized light of specific direction and reflection the polarization spectro layer perpendicular to the polarized light of described specific direction.In technical scheme described in the embodiment of the present invention, due to be arranged in first substrate dorsad the line polaroid of the first polarizing layer of liquid crystal layer one side be replaced by can transmission specific direction polarized light (polarized light of described specific direction is generally P polarized light) and reflection perpendicular to the polarization spectro layer of the polarized light (the described polarized light perpendicular to described specific direction is generally S polarized light) of described specific direction, thereby, in the time that the backlight of display device is not lighted, screen can present mirror effect due to the environment polarized light of a direction of reflection, and in the time that the backlight of display device is lighted, screen can transmission other direction polarized light and realize the effect of picture disply, the practicality of raising display device and functional.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1 shows that the structural representation of liquid crystal indicator described in prior art;
Figure 2 shows that corresponding light conspectus when the backlight when liquid crystal indicator is not lighted in prior art;
Figure 3 shows that the structural representation of display device described in the embodiment of the present invention;
Figure 4 shows that transmission and the reflection schematic diagram of the structural representation of the layer of polarization spectro described in the embodiment of the present invention and P, the relatively described polarization spectro layer of S polarized light;
Figure 5 shows that corresponding light conspectus when the backlight when display device is not lighted described in the embodiment of the present invention;
Figure 6 shows that corresponding light conspectus one when the backlight when display device is lighted described in the embodiment of the present invention;
Figure 7 shows that corresponding light conspectus two when the backlight when display device is lighted described in the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of display device, described display device can be display panels, Electronic Paper, OLED(Organic Light-Emitting Diode, Organic Light Emitting Diode) any product or parts that possess Presentation Function such as panel, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument, the embodiment of the present invention is not limited in any way this.
Particularly, as shown in Figure 3, it is the structural representation of display device described in the embodiment of the present invention, described display device can comprise first substrate 31, second substrate 32, be filled in liquid crystal layer 33 between described first substrate 31 and described second substrate 32, be arranged on described first substrate 31 dorsad described liquid crystal layer 33 1 sides the first polarizing layer 34 and be arranged on described second substrate 32 the second polarizing layer 35 of described liquid crystal layer 33 1 sides dorsad, wherein:
Described the first polarizing layer 34 can be polarization spectro layer 36, described polarization spectro layer 36 can transmission along the polarized light of specific direction and reflection the polarized light perpendicular to described specific direction; Wherein, in embodiment of the present invention, the polarized light of described specific direction can be P polarized light conventionally, and the described polarized light perpendicular to described specific direction can be S polarized light conventionally.
It should be noted that, according to prior art, the definition of P, S polarized light can be as follows: when light penetrates optical element surperficial with non-perpendicular angle, transmission and reflection characteristic all depends on polarization phenomena, in such cases, the coordinate system of use is defined by the plane that contains input and folded light beam.If the polarization vector of light, in this plane, is called P polarized light, if the polarization vector of light, perpendicular to this plane, is called S polarized light; Particularly, any input polarization state can be expressed as the vector of S and P component, and the embodiment of the present invention does not repeat this.
In technical scheme described in the embodiment of the present invention, due to be arranged in first substrate 31 dorsad the line polaroid of the first polarizing layer 34 of liquid crystal layer 33 1 sides be replaced by can transmission specific direction polarized light and reflection perpendicular to the polarization spectro layer of the polarized light of described specific direction, thereby, in the time that the backlight of display device is not lighted, screen can present mirror effect due to the environment polarized light of a direction of reflection, and in the time that the backlight of display device is lighted, screen can transmission other direction polarized light and realize the effect of picture disply, the practicality of raising display device and functional.
Particularly, as shown in Figure 4, described polarization spectro layer 36 can comprise reflection horizon 361 conventionally; Wherein, described reflection horizon 361 can be formed by multilayer film conventionally, described multilayer film is alternately formed by the different bi-material of refractive index, to realize the effect of incident light being carried out to the light splitting (polarized light of transmission specific direction reflection are perpendicular to the polarized light of described specific direction) of different polarization direction by the mutual overlapping multi-layer film structure of high and low refractive index material.
Further, in embodiment of the present invention, the first tunic and last tunic in described reflection horizon 361 can be commaterial conventionally, to form { (high-index material, low-index material)
nhigh-index material } overlapping structure or { (low-index material, high-index material)
nlow-index material } overlapping structure, the embodiment of the present invention is not limited in any way this.It should be noted that in addition, as long as can realize transmission along the polarized light of specific direction and reflect the effect perpendicular to the polarized light of described specific direction, described reflection horizon 361 can also adopt other overlapping structures, and the embodiment of the present invention is not also limited in any way this.Particularly, in the polarization spectro layer 36 described in Fig. 4, what described reflection horizon 361 adopted is { (high-index material, low-index material)
nhigh-index material } overlapping structure.
Further, in embodiment of the present invention, for the ease of drawing materials and reducing material cost, the described bi-material in described reflection horizon 361 can be respectively the titania (TiO that refractive index is relatively high conventionally
2) and the relatively low silicon dioxide (SiO of refractive index
2), the embodiment of the present invention does not repeat this.
Further, as shown in Figure 4, in order to reach the object in the described reflection horizon 361 of protection, described polarization spectro layer 36 can also comprise the protective seam 362 that is positioned at 361 both sides, described reflection horizon conventionally; Further, in order to reach good translucent effect, described protective seam 362 can be transparent material conventionally.
Further; in order to reach the object of being convenient to draw materials and reducing material cost, described transparent material (being described protective seam 362) can be chosen for the material of (comprising the refractive index of the bi-material in described reflection horizon 361) between the refractive index of the bi-material that refractive index can be in described reflection horizon 361 conventionally.
For example, as shown in Figure 4, when the bi-material in described reflection horizon 361 is respectively titania (TiO
2) and silicon dioxide (SiO
2) time, described protective seam 362 can be the transparent materials such as glass (refractive index is less than titania but is more than or equal to silicon dioxide), and now, the film layer structure of described polarization spectro layer 36 can be expressed as { transparent material/(the TiO such as glass
2/ SiO
2)
ntiO
2the transparent materials such as/glass }, the embodiment of the present invention does not repeat this.Correspondingly, now, the transmission of P, the relatively described polarization spectro layer 36 of S polarized light and reflection schematic diagram can be as shown in Figure 4, and the embodiment of the present invention does not also repeat this.
Certainly it should be noted that; described transparent material (being described protective seam 362) also can be chosen for arbitrary material that refractive index is greater than the refractive index of the high-index material in described reflection horizon 361; or refractive index is less than the material of the refractive index of the low-index material in described reflection horizon 361, the embodiment of the present invention is not limited in any way this.
Further, in embodiment of the present invention, for simplify display device film layer structure, reduce the thickness of display device, protective seam 362(first protective seam in described polarization spectro layer 36) can be the corresponding substrate of described polarization spectro layer 36, as described in first substrate 31; ; now; can directly adopt at described first substrate 31 upper surfaces (one side not contacting with described liquid crystal layer 33) deposition of reflective layer 361; and (one side not contacting with the first protective seam) deposits another protective seam 362(the second protective seam on described reflection horizon 361) obtain described polarization spectro layer 36, the embodiment of the present invention does not repeat this.
Certainly; it should be noted that; now; also can adopt at described first substrate 31 upper surface deposition protective seam 362(the first protective seams); and on described the first protective seam 362 (one side not contacting with described liquid crystal layer 33) deposition of reflective layer 361; and (one side not contacting with the first protective seam) deposits another protective seam 362(the second protective seam on described reflection horizon 361) obtain described polarization spectro layer 36, the embodiment of the present invention does not also repeat this.
Further, in embodiment of the present invention, described display device also can be provided with backlight 37 conventionally; Wherein, described backlight 37 can be a subassembly that is arranged in the backlight module under described the second polarizing layer 35 conventionally, and the embodiment of the present invention does not repeat this.
Further, in described multilayer film in described reflection horizon 361, the thickness of every skim all can be 1/4 of predominant wavelength backlight that described backlight 37 sends conventionally, to pile up by rete and the film layer structure of 1/4 predominant wavelength thickness produces the principle of anti-reflection film, so realize specific direction polarized light (P polarized light) complete transmission and perpendicular to the effect of reflection completely of the polarized light (S polarized light) of described specific direction.
Particularly, taking the polarized light of described specific direction as P polarized light is as example, as shown in Figure 5, in the time that described backlight 37 is not lighted, because described the first polarizing layer 34 is described polarization spectro layer 36, and because described polarization spectro layer 36 possesses the P polarized light in transmission surround lighting, and the effect of S polarized light in reflect ambient light (particularly, the cardinal principle of described polarization spectro layer 36 is, in the time that incidence natural lights is in the Brewster angle of incident medium face, can realize the complete transmission of P polarized light and the reflection completely of S polarized light), therefore, now, described display device can form the effect that minute surface shows because the S polarized light in surround lighting is reflected.
Further, as shown in Figure 6, in the time that described backlight 37 is lighted, owing to conventionally can be simple linear polarizer in described the second polarizing layer 35, therefore, with existing technology type seemingly, there will be the P polarized light (for picture disply) of transmission backlight in backlight and absorb the effect of backlight S polarized light backlight, and, now, backlight excessively strong due to backlight, therefore, the effect that minute surface shows can't be there is, that is, the normal demonstration of described display device can't be affected.
Further, in embodiment of the present invention, for the polarized light perpendicular to described specific direction in further wiping out background light, it is the interference of S polarized light, better or the picture display effect when further improving display device and normally showing of effect that minute surface is shown, simple linear polarizer in described the second polarizing layer 35 also can be replaced with to the described polarization spectro layer 36 that structure is identical with described the first polarizing layer 34, now, as shown in Figure 7, in the time that described backlight 37 is lighted, owing to being also polarization spectro layer 36 in described the second polarizing layer 35, therefore, there will be the P polarized light (for picture disply) of transmission backlight in backlight, and thereby the S polarized light in backlight is reflected back into the effect that described backlight module 37 utilizes again, thereby can reach the object that improves the picture display effect of described display device while normally showing.
It should be noted that, in embodiment of the present invention, for simplify display device film layer structure, reduce the thickness of display device, the protective seam 362 in the polarization spectro layer 36 in described the second polarizing layer 35 also can be the substrate at described polarization spectro layer 36 place, as described in second substrate 32; ; now; can directly adopt at described second substrate 32 lower surfaces (one side not contacting with described liquid crystal layer 33) deposition of reflective layer 361; and deposit another protective seam 362 at described reflection horizon 361 lower surfaces (one side not contacting with described second substrate 32) and obtain described polarization spectro layer 36, the embodiment of the present invention does not repeat this.
Certainly; it should be noted that; now; also can adopt at described second substrate 32 lower surfaces and deposit protective seam 362(first protective seam); and at described protective seam 362(the first protective seam) lower surface (one side not contacting with described second substrate 32) deposition of reflective layer 361; and deposit another protective seam 362(the second protective seam at described reflection horizon 361 lower surfaces (one side not contacting with described the first protective seam)) obtain described polarization spectro layer 36, the embodiment of the present invention does not also repeat this.
Have again, it should be noted that, display device described in the embodiment of the present invention can be TN(Twisted Nematic, twisted-nematic) pattern, VA(Vertical Alignment, vertical orientated) pattern, IPS(In-Plane Switching, plane conversion technology) pattern or ADS(Advanced Super Dimension Switch, a senior super dimension switch technology) pattern etc., the embodiment of the present invention is not limited in any way this.
The embodiment of the present invention provides a kind of display device, comprise first substrate, second substrate, be filled in liquid crystal layer between described first substrate and described second substrate, be arranged on described first substrate dorsad described liquid crystal layer one side the first polarizing layer and be arranged on described second substrate the second polarizing layer of described liquid crystal layer one side dorsad, wherein, described the first polarizing layer be can transmission along the polarized light of specific direction and reflection the polarization spectro layer perpendicular to the polarized light of described specific direction.In technical scheme described in the embodiment of the present invention, due to be arranged in first substrate dorsad the line polaroid of the first polarizing layer of liquid crystal layer one side be replaced by can transmission specific direction polarized light (being generally P polarized light) and reflection perpendicular to the polarization spectro layer of the polarized light (being generally S polarized light) of described specific direction, thereby, in the time that the backlight of display device is not lighted, screen can present mirror effect due to the environment polarized light of a direction of reflection, and in the time that the backlight of display device is lighted, screen can transmission other direction polarized light and realize the effect of picture disply, the practicality of raising display device and functional.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a display device, comprise first substrate, second substrate, be filled in liquid crystal layer between described first substrate and described second substrate, be arranged on described first substrate dorsad described liquid crystal layer one side the first polarizing layer and be arranged on described second substrate the second polarizing layer of described liquid crystal layer one side dorsad, it is characterized in that
Described the first polarizing layer is polarization spectro layer, described polarization spectro layer can transmission along the polarized light of specific direction and reflection the polarized light perpendicular to described specific direction.
2. display device as claimed in claim 1, is characterized in that,
Described the second polarizing layer is the described polarization spectro layer that structure is identical with described the first polarizing layer.
3. display device as claimed in claim 1 or 2, is characterized in that,
Described polarization spectro layer comprises reflection horizon;
Described reflection horizon is formed by multilayer film, and described multilayer film is alternately formed by the different bi-material of refractive index.
4. display device as claimed in claim 3, is characterized in that,
Described bi-material is respectively titania and silicon dioxide.
5. the display device as described in claim 3 or 4, is characterized in that,
Described polarization spectro layer also comprises the protective seam that is positioned at both sides, described reflection horizon.
6. display device as claimed in claim 5, is characterized in that,
Described protective seam is transparent material.
7. display device as claimed in claim 6, is characterized in that,
Between the refractive index of the bi-material of the refractive index of described transparent material in described reflection horizon.
8. the display device as described in claim 6 or 7, is characterized in that,
Described transparent material is glass.
9. the display device as described in any one in claim 5 to 8, is characterized in that,
A protective seam in described polarization spectro layer is the corresponding first substrate of described polarization spectro layer or second substrate.
10. the display device as described in any one in claim 3 to 9, is characterized in that,
Described display device is provided with backlight, and in described multilayer film, the thickness of every skim is 1/4 of predominant wavelength backlight that described backlight sends.
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| CN201410054796.9A CN103838029B (en) | 2014-02-18 | 2014-02-18 | A kind of display unit |
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|---|---|---|---|
| CN201410054796.9A CN103838029B (en) | 2014-02-18 | 2014-02-18 | A kind of display unit |
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| CN103838029B CN103838029B (en) | 2016-05-18 |
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| CN114647113A (en) * | 2022-03-21 | 2022-06-21 | 北京京东方光电科技有限公司 | Display module and display device |
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