CN104280932A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN104280932A CN104280932A CN201410558853.7A CN201410558853A CN104280932A CN 104280932 A CN104280932 A CN 104280932A CN 201410558853 A CN201410558853 A CN 201410558853A CN 104280932 A CN104280932 A CN 104280932A
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- 239000000758 substrate Substances 0.000 claims abstract description 41
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- 230000004888 barrier function Effects 0.000 claims description 19
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- 239000000463 material Substances 0.000 claims description 11
- 238000005286 illumination Methods 0.000 claims description 9
- 239000007769 metal material Substances 0.000 claims description 7
- 238000002310 reflectometry Methods 0.000 claims description 6
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 9
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- 238000002360 preparation method Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910001257 Nb alloy Inorganic materials 0.000 description 1
- 229910000583 Nd alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- VVTQWTOTJWCYQT-UHFFFAOYSA-N alumane;neodymium Chemical compound [AlH3].[Nd] VVTQWTOTJWCYQT-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention belongs to the technical field of display and particularly relates to a display panel and a display device. The display panel comprises a color-film substrate, an array substrate and a liquid crystal layer arranged between the color-film substrate and the array substrate, the color-film substrate and the array substrate are arranged in a box-aligning manner, the display panel comprises a diffusion sheet which is arranged on one side, far away from the array substrate, of the color-film substrate, and the diffusion sheet has refractive index which is gradually increased from the incident side to the emergent side along the thickness direction. The display panel is capable of increasing external light utilization ratio and acquiring a wider viewing angle, and low power consumption can be kept while the wide viewing angle is achieved.
Description
Technical field
The invention belongs to display technique field, be specifically related to a kind of display panel and display device.
Background technology
Liquid crystal indicator (Liquid Crystal Display) is the main product of current flat pannel display, classified according to light source type, liquid crystal indicator can be divided into transmission-type (transmissive), reflective (reflective) and Transflective (transflective, also referred to as half-transmission half-reflection type).
Existing liquid crystal indicator mostly is transmissive display pattern, and this pattern needs more brightness from backlight to support the brightness of whole display device.Under strong ambient light conditions, then must improve display brightness by the mode improving back light source brightness, thus improve display quality, so virtually just add the power consumption of whole display device, especially for as mobile display device or portable display device, high requirement is proposed to the flying power of power supply.
Along with people are to the multifarious requirement of display, for the arbitrariness of viewing location and the fidelity of image, also panel display apparatus is proposed to the requirement of wide viewing angle at present.In current panel display apparatus, generally by adopting wide-angle polaroid to compensate visual angle, thus realize effect of wide angle.But, adopt wide-angle polaroid to realize wide viewing angle, because wide-angle polaroid has directivity, the brightness of display panel can be reduced further.Display brightness to the demand of low-power consumption strongly, and is improved by increasing back light source brightness merely in current flat pannel display market, and the mode thus improving display quality is progressively eliminated.
Liquid crystal indicator is more and more widely used in all kinds of mobile portable equipment, this kind equipment is many in outdoor application, many times under the impact of strong surround lighting LCD screen displaying contents human eye to be difficult to identification clear, visible, simple transmissive display pattern has been difficult to the demand meeting outdoor utility.But, the shortcoming that the liquid crystal indicator of current reflective display mode exists is that reflection efficiency is low, in order to improve the efficiency of reflected light, adopt does in the electrode surface microstructure of a reflex mode improved more at present, but owing to being subject to the restriction of exposure technology fineness up till now, reflection efficiency is difficult to significantly be promoted.
Visible, design the simple low-power consumption of a kind of structure, the display device of wide viewing angle becomes technical matters urgently to be resolved hurrily at present.
Summary of the invention
Technical matters to be solved by this invention is for above shortcomings in prior art, provides a kind of display panel and display device, and this display panel can improve the utilization factor of ambient light and obtain wider visual angle, while realizing wide viewing angle, keep low-power consumption.
The technical scheme that solution the technology of the present invention problem adopts is this display panel, the liquid crystal layer comprising the color membrane substrates to box setting, array base palte and be arranged between described color membrane substrates and described array base palte, wherein, described display panel also comprises diffusion sheet, described diffusion sheet is arranged at the side of described color membrane substrates away from described array base palte, the refractive index that described diffusion sheet has through-thickness, increases progressively to light emission side gradual change from incident side.
Preferably, in described array base palte, also comprise reflecting electrode, wherein:
In described array base palte, square crossing is provided with grid line and data line, and the metal material that described grid line and described data line adopt reflectivity to be greater than 85% is formed, and namely described grid and described data line form reflecting electrode;
Or the pixel openings district that described array base palte is being surrounded by described grid line and described data line is formed with reflecting electrode, the metal material that described reflecting electrode adopts reflectivity to be greater than 85% is formed.
Preferably, described diffusion sheet is arranged at the side of described color membrane substrates away from described array base palte by attaching mode.
Preferably, the ranges of indices of refraction of described diffusion sheet is 1.35-1.36.
Preferably, the thickness range of described diffusion sheet is 130 μm-135 μm.
Preferably, described diffusion sheet adopts photochromics to be formed, and photochromics described in this controls to form different orientations by illumination and makes described diffusion sheet obtain the refractive index of the gradual change of through-thickness.
Preferably, described diffusion sheet adopts photosensitive PET material to be formed, and described photosensitive PET material controls to form different orientations by UV illumination and makes described diffusion sheet obtain the refractive index of the gradual change on through-thickness.
Preferably, described photosensitive PET material is adopted to form diffusion barrier, use with the oblique 30 ° of UV light arranged of face of described diffusion barrier and irradiate described diffusion barrier with the face of described diffusion barrier vertically disposed UV light simultaneously, the polarized light of described UV light to be wavelength be 313nm, exposure intensity scope is 30-40mJ/cm
2.
Preferably, described color membrane substrates is also provided with polaroid away from the side of described array base palte, and described diffusion sheet is arranged between described color membrane substrates and described polaroid.
A kind of display device, comprises above-mentioned display panel.
The invention has the beneficial effects as follows: the mode that this display panel is matched with diffusion sheet by employing reflecting electrode realizes reflective wide-angle display mode, strong surround lighting can be effectively utilized when there being strong surround lighting, the light of incident feed liquor crystal layer is reflexed in human eye effectively, and make light realize dispersing of different directions through the refractive index that diffusion sheet increases from inside to outside gradually, thus obtain wider visual angle, improve light utilization efficiency;
Adopt the power consumption of the display device of this display panel lower, display effect is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of display panel in the embodiment of the present invention 1;
Fig. 2 is that diffusion barrier carries out the light-struck schematic diagram of UV;
Fig. 3 be in Fig. 2 diffusion barrier after UV illumination is penetrated at the schematic diagram of the gradually changed refractive index of thickness direction;
Fig. 4 is the light path schematic diagram of light in diffusion sheet;
Fig. 5 is the light path schematic diagram of light display panel in FIG;
In Reference numeral:
1-color membrane substrates; The color rete of 11-; 2-array base palte; 3-liquid crystal layer; 4-polaroid; 5-diffusion sheet; 50-diffusion barrier; 51-incident side; 52-light emission side; 6-reflecting electrode.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, display panel of the present invention and display device are described in further detail.
Embodiment 1:
The present embodiment provides a kind of display panel, and this display panel has the diffusion sheet of graded index by adopting, achieve effect of wide angle, and can not reduce the brightness of display panel; Meanwhile, also adopt the reflecting electrode coordinated with it, improve ambient light utilization factor, achieve the wide viewing angle under low-power consumption mode and high brightness display.
As shown in Figure 1, in the present embodiment, display panel comprises the color membrane substrates 1, array base palte 2 and the liquid crystal layer 3 that is arranged between color membrane substrates 1 and array base palte 2 that arrange box, display panel also comprises diffusion sheet 5, diffusion sheet 5 is arranged at the side of color membrane substrates 1 away from array base palte 2, and diffusion sheet 5 through-thickness has the refractive index of gradual change.Specifically, diffusion sheet 5 refractive index that there is through-thickness, increase progressively to light emission side gradual change from incident side.Wherein, for display panel, the incident side of diffusion sheet 5 is namely near the side of color membrane substrates 1, and the light emission side of diffusion sheet 5 is namely away from the side of color membrane substrates 1.With reference to the index path of figure 5, incident side 51 is closer to the outside of display panel relatively for the light emission side 52 of diffusion sheet 5, and diffusion sheet 5 can play the diffusion of different angles to the light through wherein directive display panel outside, expand the range of refractive of light.
In Fig. 1, color membrane substrates 1 is also provided with polaroid 4 away from the side of array base palte 2, and diffusion sheet 5 is arranged between color membrane substrates 1 and polaroid 4, and polaroid 4 can play good protective effect to diffusion sheet 5; And the refractive index of diffusion sheet 5 increases progressively along the side of a laterally closer polaroid 4 near color membrane substrates 1, namely diffusion sheet 5 is less than refractive index away from color membrane substrates 1 side in the refractive index near color membrane substrates 1 side.
As shown in Figure 1, color membrane substrates 1 comprises the color rete 11 realizing colored display, realizes colored display to make display panel; Simultaneously, reflecting electrode 6 is also comprised in array base palte 2, reflecting electrode 6, for by from the extraneous incident ray entering display panel through liquid crystal layer 3 of display panel, again reflexes to liquid crystal layer 3 and is diffused as under the effect of diffusion sheet 5 to multiple angle outgoing, finally realizes wide viewing angle display; Meanwhile, this display panel, owing to adopting the structure of reflective electrode, can better utilize surround lighting to show when ambient light is stronger, improves light utilization efficiency, reduces power consumption.
Under normal circumstances, in array base palte 1, square crossing is provided with grid line and data line, and the metal material that grid line and data line adopt reflectivity to be greater than 85% is formed, and namely grid and data line form reflecting electrode 6; Or the pixel openings district that array base palte 1 is being surrounded by grid line and data line is formed with reflecting electrode 6, the metal material that reflecting electrode 6 adopts reflectivity to be greater than 85% is formed.Wherein, metal material comprises at least one in molybdenum (Mo), molybdenum niobium alloy (MoNb), aluminium (Al), aluminium neodymium alloy (AlNd), titanium (Ti) and copper (Cu).
Here it should be understood that owing to not needing to increase extra patterning processes, therefore technique is comparatively succinct when directly adopting grid line and data line as scheme during reflecting electrode 6; When employing is formed with the scheme of reflecting electrode 6 in the pixel openings district that grid line and data line surround, reflecting electrode 6 insulate with other metal constructions in array base palte 1, therefore generally need arrange insulation course reflecting electrode 6 and other metal constructions are kept apart, therefore its patterning processes relative complex, but because the reflecting electrode 6 now formed has larger area, therefore reflecting effect is better, and light utilization efficiency is high, in embody rule process, any one scheme wherein can be selected according to demand.
In the present embodiment, preferably, the ranges of indices of refraction of diffusion sheet 5 is 1.35-1.36, and in this ranges of indices of refraction, display panel can obtain the angular field of view of 45 °-55 °.
Wherein, diffusion sheet 5 adopts photochromics to be formed, and this photochromics controls to form different orientations by illumination and makes diffusion sheet 5 obtain the refractive index of the gradual change of through-thickness.That is, the diffusion sheet 5 playing diffusion to light in the present embodiment is that material that can be photo orientated makes, and diffusion sheet 5 makes photochromics form anisotropy diaphragm, to realize the diffusion of different directions to light in Light Curing.
Preferably, diffusion sheet 5 adopts photosensitive PET (polyethylene terephthalate, polyethylene terephthalate) material formation, photosensitive PET material controls to form different orientations by UV (ultraviolet light) illumination and makes diffusion sheet 5 obtain the refractive index of the gradual change on through-thickness.
Wherein, the refractive index of diffusion sheet 5 by the impact of photo-irradiation intensity, and with the thickness range of diffusion sheet 5 without much relations.As shown in Figure 2, photosensitive PET material is adopted to form diffusion barrier 50, use with the oblique 30 ° of UV light arranged of face of diffusion barrier 50 and to irradiate diffusion barrier 50, UV light be wavelength is simultaneously the polarized light of 313nm with the vertically disposed UV light of the face of diffusion barrier 50, exposure intensity scope is 30-40mJ/cm
2.Because the intensity of illumination of UV light on diffusion barrier 50 is successively decreased along with the increase of thickness, the refractive index of diffusion barrier 50 near UV light source side is made to be greater than refractive index away from UV light source side, therefore diffusion barrier 50 through-thickness making photosensitive PET material be formed produces different refractivity, thus forms diffusion sheet 5.Diffusion barrier 50 forms diffusion sheet 5 after UV illumination is penetrated, when diffusion sheet 5 is arranged on the outside of color membrane substrates 1, namely side less for the refractive index of diffusion sheet 5 is set together away from the side of UV light source and color membrane substrates 1 in light irradiation process, thus forms the diffusion sheet 5 of refractive index that there is through-thickness, increase progressively to light emission side 52 gradual change from incident side 51.
Diffusion sheet 5 the gradually changed refractive index of thickness direction schematic diagram as shown in Figure 3, from microcosmic, diffusion sheet 5 can be considered as multiple microlayer structures of parallel layering in a thickness direction, and the refractive index between each microlayer structures is gradual change change, and more outside away from color membrane substrates 1, its refractive index is larger.Composition graphs 4 and Fig. 5, after passing color membrane substrates 1 from the light of liquid crystal layer 3 incidence, the rule that refraction angle is greater than incident angle is followed in each microbedding in diffusion sheet 5, thus in diffusion sheet 5, obtain the refraction angle increased gradually to light emission side 52 from incident side 51, and then realize the wide viewing angle display of display panel.
In the present embodiment, the thickness range of diffusion sheet 5 is 130 μm-135 μm, and in patterning processes, this thickness range can obtain preferably film-forming process effect.
In the present embodiment, diffusion sheet 5 is arranged at the side of color membrane substrates 1 away from array base palte 2 by attaching mode.In concrete preparation process, technology carries out the sealed plastic box coating of color membrane substrates 1 and the liquid crystal layer 3 of array base palte 2 is coated with first routinely, and is undertaken box and cutting process by the two, the display panel semi-manufacture of formation monolithic; Then diffusion sheet 5 is attached to the outside of color membrane substrates 1, then attaches polaroid 4 in the outside of diffusion sheet 5, thus complete the preparation of display panel finished product.
Display panel in the present embodiment, by color membrane substrates 1 arranged outside diffusion sheet 5, makes the visible angle of display panel increase, and structure is simple, relatively low to technological requirement; And, adopt attaching mode that diffusion sheet 5 is combined with color membrane substrates 1, and by forming entirety to box mode and array base palte 2, technique is simple, convenient operation.
In the present embodiment, other structures of display panel can adopt the corresponding construction of display panel in prior art, do not limit here.
Display panel in the present embodiment is reflection type liquid crystal layer display panel, reflective wide-angle display mode is realized by the mode adopting reflecting electrode to match with diffusion sheet, this display panel can effectively utilize strong surround lighting when there being strong surround lighting, the light of incident feed liquor crystal layer is reflexed in human eye effectively, and make light realize the dispersing of different directions by incident side to the refractive index that light emission side increases gradually through diffusion sheet, thus obtain the visual angle wider with the refraction angle in a simple direction, also efficiently utilize the auxiliary display of surround lighting realizing wide viewing angle simultaneously, improve light utilization efficiency, therefore more the energy can be saved when high light and outdoor environment use, comply with low-power consumption trend, all wide usage space can be had in outdoor or indoor use.
Embodiment 2:
The present embodiment provides a kind of display device, and this display device comprises the display panel in embodiment 1.
This display device can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
Display device in the present embodiment, utilize the display panel in embodiment 1, in array base palte side, general side-edge type backlight or direct-light-type backlight are set, due to this display panel, there is higher light utilization efficiency and wide viewing angle display can be realized, make the power consumption of this display device lower, display effect is better.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. a display panel, the liquid crystal layer comprising the color membrane substrates to box setting, array base palte and be arranged between described color membrane substrates and described array base palte, it is characterized in that, described display panel also comprises diffusion sheet, described diffusion sheet is arranged at the side of described color membrane substrates away from described array base palte, the refractive index that described diffusion sheet has through-thickness, increases progressively to light emission side gradual change from incident side.
2. display panel according to claim 1, is characterized in that, also comprises reflecting electrode in described array base palte, wherein:
In described array base palte, square crossing is provided with grid line and data line, and the metal material that described grid line and described data line adopt reflectivity to be greater than 85% is formed, and namely described grid and described data line form reflecting electrode;
Or the pixel openings district that described array base palte is being surrounded by described grid line and described data line is formed with reflecting electrode, the metal material that described reflecting electrode adopts reflectivity to be greater than 85% is formed.
3. display panel according to claim 1, is characterized in that, described diffusion sheet is arranged at the side of described color membrane substrates away from described array base palte by attaching mode.
4. display panel according to claim 1, is characterized in that, the ranges of indices of refraction of described diffusion sheet is 1.35-1.36.
5. display panel according to claim 1, is characterized in that, the thickness range of described diffusion sheet is 130 μm-135 μm.
6. display panel according to claim 1, is characterized in that, described diffusion sheet adopts photochromics to be formed, and photochromics described in this controls to form different orientations by illumination and makes described diffusion sheet obtain the refractive index of the gradual change of through-thickness.
7. display panel according to claim 6, it is characterized in that, described diffusion sheet adopts photosensitive PET material to be formed, and described photosensitive PET material controls to form different orientations by UV illumination and makes described diffusion sheet obtain the refractive index of the gradual change on through-thickness.
8. display panel according to claim 7, it is characterized in that, described photosensitive PET material is adopted to form diffusion barrier, use with the oblique 30 ° of UV light arranged of face of described diffusion barrier and irradiate described diffusion barrier with the face of described diffusion barrier vertically disposed UV light simultaneously, the polarized light of described UV light to be wavelength be 313nm, exposure intensity scope is 30-40mJ/cm
2.
9. the display panel according to any one of claim 1-8, is characterized in that, described color membrane substrates is also provided with polaroid away from the side of described array base palte, and described diffusion sheet is arranged between described color membrane substrates and described polaroid.
10. a display device, is characterized in that, comprises the display panel described in any one of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410558853.7A CN104280932B (en) | 2014-10-20 | 2014-10-20 | A kind of display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410558853.7A CN104280932B (en) | 2014-10-20 | 2014-10-20 | A kind of display panel and display device |
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| CN104280932A true CN104280932A (en) | 2015-01-14 |
| CN104280932B CN104280932B (en) | 2018-03-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965358A (en) * | 2015-07-14 | 2015-10-07 | 深圳市华星光电技术有限公司 | Reflecting type TFT array panel, preparing method thereof and liquid crystal display |
| CN105572951A (en) * | 2015-12-16 | 2016-05-11 | 武汉华星光电技术有限公司 | Display device and reflective display panel thereof |
| CN105866967A (en) * | 2016-06-25 | 2016-08-17 | 武汉华星光电技术有限公司 | Display screen and display |
| CN106647093A (en) * | 2017-03-02 | 2017-05-10 | 京东方科技集团股份有限公司 | Liquid crystal display panel, liquid crystal display and displaying method thereof |
| CN106707635A (en) * | 2017-03-20 | 2017-05-24 | 深圳市华星光电技术有限公司 | Array substrate, method for manufacturing same, liquid crystal display panel and liquid crystal display |
| CN107561766A (en) * | 2016-06-30 | 2018-01-09 | 三星显示有限公司 | Reflective liquid crystal displays equipment |
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| CN106707635A (en) * | 2017-03-20 | 2017-05-24 | 深圳市华星光电技术有限公司 | Array substrate, method for manufacturing same, liquid crystal display panel and liquid crystal display |
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