CN1797098A - Display faceplate and LCD device - Google Patents
Display faceplate and LCD device Download PDFInfo
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- CN1797098A CN1797098A CN 200410091915 CN200410091915A CN1797098A CN 1797098 A CN1797098 A CN 1797098A CN 200410091915 CN200410091915 CN 200410091915 CN 200410091915 A CN200410091915 A CN 200410091915A CN 1797098 A CN1797098 A CN 1797098A
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Abstract
The invention provides a display panel, comprising a lower substrate, an upper substrate and a liquid crystal layer between them, where one side of the lower substrate near to the liquid crystal is divided into two regions, one formed with a transmitting layer and the other formed with a reflecting layer. The invention also provides a liquid crystal display, comprising a backlight module and the above display panel. The transmitting layer and reflecting layer are in the same plane, able to reduce space utilization ratio so as to be portable. Besides, the invention can achieve a power-saving purpose.
Description
[technical field]
The present invention relates to the liquid crystal indicator of a kind of frivolous, portable display panel and a kind of frivolous, power saving.
[background technology]
Because portable liquid crystal shows product and emphasizes easy to carry, Mobile Communications, complete, the power saving of multimedia function, and all can use in indoor/outdoor, day and night, therefore the small-medium size lcd technology that is applied to these products also will cooperate this trend, these application products are for the requirement of display panel, except easy to carry, also emphasize characteristics such as image quality, frivolous, power saving, and outdoor indoor, day and night can use all.
Utilize the light source difference according to liquid crystal indicator, can be divided into penetration liquid crystal display device and reflective LCD device.Penetration liquid crystal display device must be provided with a backlight at the display panels back side and show to realize image, and still, the backlight power consumption accounts for half of whole penetration liquid crystal display device power consumption, so the penetration liquid crystal display device power consumption is bigger.Reflective LCD device can solve the big problem of penetration liquid crystal display device power consumption, but is difficult to realize that image shows under the faint environment of light.For solving the defective that both exist, the industry research focus of coming in all concentrates on semi-penetrating semi-reflecting type liquid crystal displaying device.
See also Fig. 1, prior art semi-penetrating semi-reflecting type liquid crystal displaying device 1 comprises that two relative transparent lower substrate 11 and upper substrate 12, liquid crystal layers 13 are sandwiched between this infrabasal plate 11 and the upper substrate 12.One transparent common electrode 14 and an alignment film 18 are successively set on this upper substrate 12 inside surfaces, on one on the retardation plate 122 and a Polarizer 121 be successively set on this upper substrate 12 outer surfaces.One transparency electrode 17, a passivation layer 16, a reflection electrode 15 and an alignment film 19 are successively set on this infrabasal plate 11 inner surfaces, wherein this passivation layer 16 and reflection electrode 15 tools one opening 151.Once retardation plate 112 and once Polarizer 111 be successively set on this infrabasal plate 11 outer surfaces.Should go up retardation plate 122 is quarter-wave plate (λ/4) with following retardation plate 112, alignment film 18,19 horizontal direction matchings (Homogeneous Alignment), and last Polarizer 121 is orthogonal with following Polarizer 111 polarization directions.Reflection electrode 15 is the metallic aluminium (Al) of high reflectance, transparent common electrode 14 and transparency electrode 17 be transparent conductive material such as tin indium oxide (Indium Tin Oxide, ITO) or indium zinc oxide (Indium Zinc Oxide, IZO).Liquid crystal layer 13 has different-thickness, and wherein the thickness of transparent common electrode 14 and 15 liquid crystal layers 13 of reflecting electrode is d11, and the thickness of transparent common electrode 14 and 17 liquid crystal layers 13 of transparency electrode is d12, and wherein d12 is approximately the twice of d11.Thickness of liquid crystal layer is that the zone of d11 is a reflector space, and thickness of liquid crystal layer is that the zone of d12 is a penetration region.
The optical delay of the liquid crystal layer 13 of reflector space is:
Δn.d11＝λ/4
Because d12 is approximately the twice of d11, so the optical delay of the liquid crystal layer 13 of penetration region is:
Δn.d12＝λ/2
Wherein Δ n is the birefraction of liquid crystal layer 13, and λ is a wavelength of light.
Because semi-penetrating semi-reflecting type liquid crystal displaying device 1 has penetrating region and echo area simultaneously in a pixel, this two zone has differing heights, this kind highly difference causes half penetrated half-reflecting liquid crystal display 1 to have a unsurmountable shortcoming, that is exactly that thickness is thicker, can not satisfy frivolous requirement, inconvenience is carried.
In addition, as everyone knows, liquid crystal indicator belongs to non-self light-emitting display device, need add light source provides liquid crystal panel enough brightness, but show product such as mobile phone, PDA, digital camera for portable liquid crystal, need often to use out of doors, and its function is more and more, for example a mobile phone just not only comprises communication function, also may comprise various functions such as DSC photograph, MP3 broadcast, DVD, radio, storage hard drive, television tuner, therefore require also more and more higher for power saving.
In view of this, provide a kind of frivolous, portable display panel and liquid crystal indicator frivolous, power saving real for essential.
[summary of the invention]
The object of the present invention is to provide a kind of frivolous, portable display panel.
Another object of the present invention is to provide a kind of liquid crystal indicator of frivolous, power saving.
The technical scheme that technical solution problem of the present invention is taked is: a kind of display panel is provided, it comprises that an infrabasal plate, a upper substrate and are positioned at the liquid crystal layer between two substrates, this infrabasal plate is divided into two zones near this liquid crystal layer one side surface, the one zone forms a penetrated bed, and another zone forms a reflection horizon.
Another technical scheme that technical solution problem of the present invention is taked is: a kind of liquid crystal indicator is provided, comprises a module backlight and a display panel, this module backlight is positioned at this display panel below.This display panel comprises that an infrabasal plate, a upper substrate and are positioned at the liquid crystal layer between two substrates, and this infrabasal plate is divided into two zones near this liquid crystal layer one side surface, and the one zone forms a penetrated bed, and another zone forms a reflection horizon.
The material of this penetrated bed is indium tin oxide or silicon dioxide, and the material in this reflection horizon is to scatter nano particle in indium tin oxide or the silicon dioxide base material.
This liquid crystal indicator also comprises a pair of light path control device, and this double light path control device electrically connects by a photoinduction element and module backlight, whether uses in order to control module backlight.
Compared with prior art, the advantage of display panel of the present invention and liquid crystal indicator is: have penetration and reflective characteristic simultaneously, and penetrated bed of the present invention and reflection horizon be positioned at same plane, therefore can reduce space availability ratio, product is easy to carry.
In addition, for liquid crystal indicator of the present invention, the existence of double light path control device makes the user can freely regulate and control the sensitivity of this photoinduction element according to self brightness demand, make the energy loss of battery drop to the interior minimum value of user's brightness comfort level scope, reach the power saving purpose.When external environment light is strong, do not light backlight, adopt reflective-mode luminous, save to have quite for electric power and benefit; When external environment light is more weak, then light backlight, utilize the light of backlight to reach luminous purpose, avoid the brightness situation not good with contrast.Because the optically-coupled effect and the very high light utilization efficiency of contained nano particle overlay film in the reflection horizon, this nano particle overlay film district shows good reflectivity, has therefore improved light utilization efficiency, also can reach power saving effect.
[description of drawings]
Fig. 1 is a prior art semi-penetrating semi-reflecting type liquid crystal displaying device structural representation.
Fig. 2 is a liquid crystal indicator structural representation of the present invention.
Fig. 3 is the module principle of work synoptic diagram backlight of liquid crystal indicator shown in Figure 2.
Fig. 4 adopts liquid crystal indicator constructed products synoptic diagram of the present invention.
[embodiment]
Seeing also Fig. 2, is liquid crystal indicator one pixel region structural representation of the present invention.This liquid crystal indicator 20 comprises a module 21 backlight and a display panel 22, and this module 21 backlight is positioned at this display panel 22 belows, and provides this display panel 22 required backlight.This module 21 backlight comprise a light source 214, with this light source 214 corresponding light source covers 213 and light guide plate 212, a reflecting plate 211, a diffuser plate 215, a blast sheet (Brightness Enhance Film, BEF) 216 and one concentration piece (DualBrightness Enhancement Film, DBEF) 217.This light source 214 can be cathode fluorescent tube (CCFL), light emitting diode (Light-Emitting Diode, LED) and the LED bundle.The effect of this light guide plate 212 is by total reflection the light that light source sends to be conducted to away from light source one side near light source one side from it, and pointolite or line source are changed into the area source with even light energy distribution, improves brightness.This reflecting plate 211 is positioned at this light guide plate 212 belows, and its surface is coated with silver or aluminum metallic material.This diffuser plate 215 is positioned at this light guide plate 212 tops, these blast sheet 216 belows.One as far as possible little clearance is arranged, for example less than 0.1mm between this diffuser plate 215 and this light guide plate 212.This blast sheet 216 has prism microstructure, also is called prismatic lens.This concentration piece 217 is positioned at blast sheet 216 tops, has light-focusing function, by improving the brightness that the light utilization ratio improves liquid crystal panel.
This light source 214 is arranged on the edge of this light guide plate 212, is side-light type, and this kind design can reduce the weight of liquid crystal indicators such as mobile computer.This light guide plate 212 is a wedge shape, and this wedge shape is bigger near light source 214 1 side sizes.This kind wedge-shaped design makes luminous energy conduct to away from light source 214 1 sides by total reflection near light source 214 1 sides from light guide plate 212.
This display panel 22 comprises that the transparent lower substrate 221 and upper substrate 227, the liquid crystal layer 224 that are oppositely arranged are sandwiched between this infrabasal plate 221 and this upper substrate 227.
This upper substrate 227 attaches colored filter a 226 (Color Filter near liquid crystal layer 224 1 side surfaces, CF), attach Polarizer 228 on away from these liquid crystal layer 224 1 side surfaces, attach an anti-glare layer 2291 (anti-glace on this Polarizer 228 successively, AG) and an antireflection 2292 (anti-reflection, AR), this anti-glare layer 2291 and this anti-reflecting layer 2292 are the soft design to visual effect, can improve transmitance, reduce dazzle.
These liquid crystal layer 224 both sides set gradually the transparency electrode 2251,2252 of two relative alignment film 2231,2232 relative settings with two.This alignment film 2231,2232 is horizontal direction matching (Homogeneous Alignment), and its material is that (polyamide, PI), the synthetic polyester for a kind of high temperature resistance, wearing and tearing and corrosion resistivity is mainly used in clad can or overlay film to polyimide.This two electrode is indium tin oxide (Indium Tin Oxide, ITO), transparent indium tin oxide (ITO) not only has high penetrance in visible-range, and in the infrared light scope high reflectance being arranged, is one can represent light selectivity (Optical Selectivity) material of different behaviors in different wave frequency scopes.Its light transmission rate is 90% to 99% in visible-range.This ITO film is that (DirectCurrent, DC) (Radio Frequency, RF) method for sputtering feed working gas argon gas and reacting gas oxygen, and be deposited on alignment film 2231,2232 surfaces for sputter or reaction equation radio frequency with the reaction equation direct current.
Once Polarizer 2210 is arranged on this infrabasal plate 221 away from these liquid crystal layer 224 1 side surfaces, and it is orthogonal with the polarization direction that should go up Polarizer 228.For each pixel region, this infrabasal plate 221 is divided into two zones near liquid crystal layer 224 1 side surfaces, one of them zone is a penetrating region, attach a penetrated bed 2201, the material of this penetrated bed 2201 can be indium tin oxide (ITO) or silicon dioxide (SiO2), the light that module 21 backlight sends can see through this zone, and its transmitance is greater than 90%.Another zone is the echo area, attach a reflection horizon 2202, nanometer reflection overlay film (nano-reflective-coating is adopted in this reflection horizon 2202, NRC) technology is dispersed in nano particle in indium tin oxide ITO or silicon dioxide (SiO2) base material, and this nano particle can be aluminium (aluminum, Al) or silver (silver, Ag), its size between the 100nm, is preferably 5nm to 20nm between 2nm.The thickness in this penetrated bed 2201 and reflection horizon 2202 between 100nm between the 500nm.Because the optically-coupled effect of nano particle overlay film and higher light utilization efficiency, sunshine or surround lighting show good reflectivity in this nano particle overlay film district.
Be that (Thin Film Transistor TFT), is to be used for the element of each pixel light flux of ACTIVE CONTROL to a thin film transistor (TFT) 222, therefore is also referred to as by " active-matrix thin film transistor (TFT) " on this penetrated bed 2201 and this reflection horizon 2202.
Fig. 3 is module backlight 21 fundamental diagrams shown in Figure 2.Light source sends one and can be considered the light beam of being made up of orthogonal P polarisation of polarization attitude and S polarisation, this light beam is via light guide plate 212, diffuser plate 215, blast sheet 216 and concentration piece (DBEF) 217 backs arrive Polarizer 221 down, wherein the polarization state of this P polarisation is perpendicular to the polarization state of following Polarizer 2210, the polarization state of this S polarisation is parallel to the polarization state of Polarizer 2210 down, so only the S polarisation can pass through Polarizer 2210 down, and being reflected onto module 21 backlight after concentration piece 217 polymerizations, reclaims again the P polarisation, again convert intensity more weak P polarisation and S polarisation relatively to, so all P polarisations that are reflected can utilize light fully through the unlimited conversion of return type.And when not adopting concentration piece 217, only the S polarisation can see through Polarizer, and the wide part of P is absorbed by Polarizer itself and produces heat, and fraction converts very weak P polarisation of intensity and S polarisation to.Therefore adopt concentration piece 217 to improve light utilization efficiency greatly.
For this liquid crystal indicator 20, be to use liquid crystal layer 224 to regulate luminous flux.Liquid crystal can change its molecular structure, allows light quantity in various degree pass through itself, also can block light fully.Liquid crystal indicator 20 contains two polaroids 2210,228, colored filter 226 and alignment film 2231,2232, and they can determine the generation of the maximal value and the color of luminous flux.Liquid crystal layer 224 is given the alignment film 2231,2232 of liquid crystal layer 224 both sides when imposing a voltage between upper substrate 227 and infrabasal plate 221, then produce an electric field, and the liquid crystal at alignment film 2231,2232 interfaces is arranged towards a certain direction.
Be to adopt liquid crystal indicator constructed products 30 synoptic diagram of the present invention as shown in Figure 4.This product 30 comprises various functions such as DSC photograph 33, MP3 broadcast 34, DVD36, radio 35, storage hard drive 37, television tuner 31, still has a pair of light path control device (Dual Light Control, DLC) 38 on these product 30 surfaces.For this kind multifunctional solution crystal device, power saving is very important.This double light path control device 38 is connected with these product 30 inner photoinduction elements (figure does not show), this photoinduction element is a light-emitting diode switch element (light diodeswitch, LDS), itself and module backlight 21 are electrical connected, and whether control by the use of controlling module 21 backlight and adopt reflective-mode or adopt the pattern of seeing through.It has adjustable sensitivity, and the user can freely regulate and control the sensitivity of this photoinduction element according to self brightness demand, makes the energy loss of battery drop to the minimum value that satisfies in the euphorosia scope as far as possible.
When the external environment light intensity is enough, be power saving, directly adopt external environment light as light source.At this moment, photoinduction element (figure does not show) this module 21 backlight of control is not luminous, and this liquid crystal indicator 20 adopts reflective-mode at this moment.Because the optically-coupled effect and the very high light utilization efficiency of contained nano particle overlay film in the reflection horizon 2202, external environment light shows good reflectivity in this nano particle overlay film district, evenly reflex to around the panel, reach luminous purpose, can effectively improve the high problem of liquid crystal indicator power consumption, reach power saving effect.
When the external environment light intensity is very weak or the user to bright comfort level when dissatisfied, can activate this double light path control device 38, the photoinduction element that is attached thereto (figure do not show) control should be backlight module 21 luminous, this liquid crystal indicator employing 20 this moment penetrates pattern.Uniform beam by module 21 backlight produces can see through this penetrated bed 2201, can not see through this and comprise the reflection horizon 2202 of nano particle.Under the electric field action that thin film transistor (TFT) 222 provides, the luminous flux of different pixels is accurately limited, thereby obtains colour image.
With compare by the semi-penetrating semi-reflecting type liquid crystal displaying device of highly control in the prior art, penetrated bed of the present invention 2201 is positioned at same plane with reflection horizon 2202, can reduce space availability ratio, and product is easy to carry; The existence of double light path control device 38 makes the user freely regulate and control the sensitivity of this photoinduction element according to self brightness demand user, makes the energy loss of battery drop to minimum value in user's brightness comfort level scope, reaches the power saving purpose; Because the optically-coupled effect and the very high light utilization efficiency of contained nano particle overlay film in the reflection horizon 2202, this nano particle overlay film district shows good reflectivity, has therefore improved light utilization efficiency, reaches power saving effect.
The present invention adopts liquid crystal indicator to can be used for DSC camera, MP3 player, DVD, radio, storage hard disk drive, video recorder, television tuner, also can be used for mobile phone, PDA, personal multimedia player, notebook and automobile with display device etc.
Claims (20)
1. display panel, it comprises that an infrabasal plate, a upper substrate and are positioned at the liquid crystal layer between two substrates, it is characterized in that: this infrabasal plate is divided into two zones near this liquid crystal layer one side surface, and the one zone forms a penetrated bed, and another zone forms a reflection horizon.
2. display panel as claimed in claim 1 is characterized in that: the material of this penetrated bed is indium tin oxide or silicon dioxide.
3. display panel as claimed in claim 1 is characterized in that: the material in this reflection horizon is to contain nano particle in indium tin oxide or the silicon dioxide base material.
4. display panel as claimed in claim 3 is characterized in that: this nano particle is silver or aluminium.
5. display panel as claimed in claim 3 is characterized in that: the size of this nano particle arrives 100nm between 2nm.
6. display panel as claimed in claim 5 is characterized in that: the size of this nano particle arrives 20nm between 5nm.
7. display panel as claimed in claim 1 is characterized in that: the thickness in this penetrated bed and this reflection horizon is that 100nm is to 500nm.
8. display panel as claimed in claim 1 is characterized in that: this infrabasal plate outer surface attaches Polarizer.
9. display panel as claimed in claim 1 is characterized in that: these liquid crystal layer both sides set gradually a pair of relative alignment film and a pair of relative transparency electrode.
10. display panel as claimed in claim 9 is characterized in that: this alignment film is a horizontal direction matching, and its material is a polyimide.
11. display panel as claimed in claim 9 is characterized in that: this transparency electrode is an indium tin oxide.
12. display panel as claimed in claim 11 is characterized in that: this indium tin oxide film is to be deposited on the alignment film surface with reaction equation dc sputtering or reaction equation radio frequency method for sputtering.
13. display panel as claimed in claim 1 is characterized in that: this penetrated bed, reflection horizon and existence one thin film transistor (TFT) between the transparency electrode of this liquid crystal layer downside.
14. display panel as claimed in claim 1 is characterized in that: this upper substrate attaches a colored filter near this liquid crystal layer one side surface, attaches Polarizer on, an anti-glare layer and an anti-reflecting layer successively away from this liquid crystal layer one side surface.
15. liquid crystal indicator, it comprises a module backlight and a display panel, this module backlight is positioned at this display panel below, this display panel comprises that an infrabasal plate, a upper substrate and are positioned at the liquid crystal layer between two substrates, it is characterized in that: this infrabasal plate is divided into two zones near this liquid crystal layer one side surface, the one zone forms a penetrated bed, and another zone forms a reflection horizon.
16. liquid crystal indicator as claimed in claim 15 is characterized in that: also comprise a pair of light path control device, this double light path control device electrically connects by a photoinduction element and module backlight, whether uses in order to control module backlight.
17. liquid crystal indicator as claimed in claim 15, it is characterized in that: this module backlight comprise a light source, with the corresponding light source cover of this light source and light guide plate, a reflecting plate, a diffuser plate, a blast sheet and a concentration piece, this light guide plate is between reflecting plate and diffuser plate, and this blast sheet and this concentration piece are successively set on this diffuser plate away from this light guide plate one side surface.
18. liquid crystal indicator as claimed in claim 17 is characterized in that: this light source is cathode fluorescent tube, light emitting diode and LED bundle.
19. liquid crystal indicator as claimed in claim 17 is characterized in that: between this diffuser plate and this light guide plate clearance is arranged, its thickness is 0.1nm.
20. liquid crystal indicator as claimed in claim 17 is characterized in that: this reflecting plate surface is coated with silver or aluminum metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919154A CN100383632C (en) | 2004-12-29 | 2004-12-29 | Display faceplate and LCD device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919154A CN100383632C (en) | 2004-12-29 | 2004-12-29 | Display faceplate and LCD device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1797098A true CN1797098A (en) | 2006-07-05 |
| CN100383632C CN100383632C (en) | 2008-04-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100919154A Expired - Fee Related CN100383632C (en) | 2004-12-29 | 2004-12-29 | Display faceplate and LCD device |
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| Country | Link |
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| CN (1) | CN100383632C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540573A (en) * | 2012-02-29 | 2012-07-04 | 深圳市华星光电技术有限公司 | Method for manufacturing three-dimensional display panel and three-dimensional display film |
| CN103514138A (en) * | 2012-06-26 | 2014-01-15 | 耐嘉股份有限公司 | Manufacturing method for calculator screen with eye protection function |
| CN109325384A (en) * | 2017-07-31 | 2019-02-12 | 敦泰电子有限公司 | Cell type optical identification of fingerprint shows equipment |
| WO2023216567A1 (en) * | 2022-05-12 | 2023-11-16 | 重庆惠科金渝光电科技有限公司 | Backlight module and display apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2712349B2 (en) * | 1988-08-30 | 1998-02-10 | 東芝ライテック株式会社 | Light reflector and tube |
| JP2003222847A (en) * | 2002-01-30 | 2003-08-08 | Kyocera Corp | Liquid crystal display device |
| JP2004085872A (en) * | 2002-08-27 | 2004-03-18 | Nitto Denko Corp | Transflective and reflective plate and polarizing plate |
| CN1523436B (en) * | 2003-08-08 | 2010-04-28 | 友达光电股份有限公司 | Semi-transmissive liquid crystal display device |
-
2004
- 2004-12-29 CN CNB2004100919154A patent/CN100383632C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540573A (en) * | 2012-02-29 | 2012-07-04 | 深圳市华星光电技术有限公司 | Method for manufacturing three-dimensional display panel and three-dimensional display film |
| CN103514138A (en) * | 2012-06-26 | 2014-01-15 | 耐嘉股份有限公司 | Manufacturing method for calculator screen with eye protection function |
| CN109325384A (en) * | 2017-07-31 | 2019-02-12 | 敦泰电子有限公司 | Cell type optical identification of fingerprint shows equipment |
| CN109325384B (en) * | 2017-07-31 | 2022-05-13 | 敦泰电子有限公司 | Embedded optical fingerprint identification display equipment |
| WO2023216567A1 (en) * | 2022-05-12 | 2023-11-16 | 重庆惠科金渝光电科技有限公司 | Backlight module and display apparatus |
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| Publication number | Publication date |
|---|---|
| CN100383632C (en) | 2008-04-23 |
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