CN105700243A - Display panel and display device thereof - Google Patents
Display panel and display device thereof Download PDFInfo
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- CN105700243A CN105700243A CN201610282389.2A CN201610282389A CN105700243A CN 105700243 A CN105700243 A CN 105700243A CN 201610282389 A CN201610282389 A CN 201610282389A CN 105700243 A CN105700243 A CN 105700243A
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- mems
- display floater
- mems switch
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- polaroid
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- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention provides a display panel and a display device thereof. By arranging an MEMS dimming device used for controlling light ray transmission at a position of the light incoming side of an array substrate, the transmission rate of a backlight ray can be controlled by controlling the opening or closing of the MEMS dimming device, so that the contrast ratio of a liquid crystal display panel can be improved, and the display effect can be enhanced; by closing the dimming device in an all black area to be displayed to block the transmission of the backlight ray, a picture in the area is at an all black state, all dark at dark state is realized, and the phenomenon of dark leakage is avoided. In addition, the dynamic contrast ratio of the liquid crystal display panel can be improved by combining the controlling of the MEMS liquid crystal display panel and liquid crystal deflection extent, and compared with a measure of singly controlling the liquid crystal deflection extent, the dimming effect of the dynamic contrast ratio of the liquid crystal display panel is better.
Description
Technical field
The present invention relates to semiconductor equipment manufacturing technology field, be specifically related to a kind of display floater and display device。
Background technology
Wide viewing angle lcd technology is different with TN (TwistedNematic, twisted nematic) pattern, and public electrode and pixel electrode, all on array base palte, produce horizontal component of electric field to drive liquid crystal molecular movement in liquid crystal material。Current common wide viewing angle display floater has FFS (FringeFieldSwitching, fringe field switching), IPS (In-PlaneSwitching, transverse electric field effect shows), VA (VerticalAlignment, perpendicular alignmnet) etc. shows pattern。FFS mode is liquid crystal circle is solve large scale, fine definition tabletop display and LCD TV to apply the wide viewing angle technology developed, the one of the hard screen technology being namely commonly called as now, under FFS mode, public electrode is transparent and be lamellar, pixel electrode is strip and is positioned on public electrode, and the two is separated by insulation。Under IPS pattern, pixel electrode and public electrode are strip, and are spaced。
Liquid crystal has certain light transmission, and the contrast of all common IPS or TN display panels is less than 2000:1, and dark-state picture also has certain brightness, causes picture contrast relatively low。And, when the different viewing areas of display panels are respectively necessary for the image showing different GTG, and common liquid crystals display floater relies on gamma curve to realize the division of GTG, cannot present at some GTG and significantly distinguish effect, there is the problem that contrast is not enough。
In addition, the display floater of existing employing wide viewing angle lcd technology includes: the first polaroid, the second polaroid, color membrane substrates and array base palte, color membrane substrates and array base palte composition display floater, first polaroid is arranged on the lower section of array base palte, and the second polaroid is arranged on the top of color membrane substrates。Due on the array base palte that electrode is arranged below, it is easy to being subject to external force pressure or the distortion of panel box, internal electrode is squeezed so that liquid crystal twists, and phase difference occurs, thus causing the picture bad phenomenon such as light leak。And under FFS and IPS display pattern, due to liquid crystal arrangement mode, it is more prominent that this light leakage phenomena shows。
Therefore, a kind of display floater and display device are needed badly to solve above-mentioned technical problem。
Summary of the invention
The present invention is directed to above shortcomings in prior art, it is provided that a kind of display floater and display device, in order to solve at least partly, contrast is low and the problem of light leak。
The present invention solves above-mentioned technical problem, adopt the following technical scheme that
The present invention provides a kind of display floater, including array base palte, described display floater also includes micro-electromechanical system (MEMS) light modulating device, described MEMS light modulating device is arranged at the incident side of described array base palte, for controlling light therethrough, stop backlight light therethrough when MEMS light modulating device is closed, allow backlight light therethrough when MEMS light modulating device is opened。
Preferably, described array base palte divides multiple pixel cells, and each pixel cell includes the sub-pix of at least one color；
Described MEMS light modulating device includes the subpixel regions one_to_one corresponding of MEMS controller and multiple mems switch, described mems switch and array base palte；
Described MEMS controller is used for, and the mems switch controlling each subpixel regions respectively corresponding opens or closes。
Further, described display floater also includes display floater controller, and described display floater controller is connected with described MEMS controller；
Described MEMS controller specifically for, according to described display floater controller send video data, the mems switch controlling each subpixel regions respectively corresponding opens or closes。
Preferably, described mems switch includes horizontally disposed substrate and occlusion part, described occlusion part be positioned at described substrate top and with each subpixel regions one_to_one corresponding, described substrate is provided with hole, described hole and each subpixel regions one_to_one corresponding；
Described MEMS controller specifically for, the occlusion part controlling mems switch corresponding to each subpixel regions respectively moves horizontally, so that described occlusion part matches with the hole of substrate realizes opening or closing of mems switch。
Preferably, described MEMS controller specifically for, according to the video data that described display floater controller sends, control occlusion part corresponding to the subpixel regions in completely black region to be shown or dark-state region and stop corresponding hole。
Preferably, the substrate of each mems switch is connected as a single entity。
Preferably, described MEMS controller specifically for, control the occlusion part synchronizing moving of the mems switch that in each pixel cell, the subpixel regions of same color is corresponding。
Preferably, it is connected by connecting portion between the occlusion part of each mems switch in each pixel cell；
Described MEMS controller is used for, and the connecting portion controlled in each pixel cell moves horizontally, so that the occlusion part that in each pixel cell, each sub-pix is corresponding hole corresponding with in substrate matches and realize opening or closing of mems switch。
Further, described array base palte includes glass substrate, and described display floater also includes the first polaroid, and described first polaroid is arranged at the lower section of glass substrate；Described mems switch is arranged between described glass substrate and the first polaroid or the lower section of described first polaroid。
Further, described MEMS light modulating device also includes multiple supporter, and above support is arranged on the substrate；
When described mems switch is arranged between described glass substrate and the first polaroid, above support is between described glass substrate and the substrate of mems switch；
When described mems switch is arranged on the lower section of described first polaroid, above support is between described first polaroid and the substrate of mems switch。
Preferably, when described mems switch is arranged between described glass substrate and the first polaroid, the glass substrate of the substrate of described mems switch and described array base palte is fitted by sealed plastic box；
When described mems switch is arranged on the lower section of described first polaroid, the substrate of described mems switch and described first polaroid are fitted by sealed plastic box。
The present invention also provides for a kind of display device, including foregoing display floater。
The present invention is capable of following beneficial effect:
The present invention by being arranged to control the MEMS light modulating device of light therethrough in the position of array base palte incident side, the transmitance controlling backlight light can be opened or closed by control MEMS light modulating device, thus improving the contrast of display panels, strengthen display effect, and stop backlight light therethrough by closing the light modulating device in completely black region to be shown, making the picture in this region is full black state, it is achieved that dark-state is entirely dark, it is to avoid light leakage phenomena。Furthermore, it is possible to control MEMS light modulating device and liquid crystal deflection degree are combined and improve the dynamic contrast of display panels, relative to the simple means by controlling liquid crystal deflection degree, the regulating effect of the dynamic contrast of display panels is more preferably。
Accompanying drawing explanation
Fig. 1 a is one of structural representation of mems switch of the present invention；
Fig. 1 b is the two of the structural representation of mems switch of the present invention；
Fig. 2 a is one of position view of mems switch of the present invention；
Fig. 2 b is the two of the position view of mems switch of the present invention。
Marginal data:
1, array base palte 2, MEMS light modulating device the 3, first polaroid
4, color membrane substrates 5, front frame 6, backboard
7, blooming piece 8, light guide plate 9, LED lamp bar
10, sealed plastic box 21, mems switch 22, supporter
211, substrate 212, occlusion part 213, hole
214, connecting portion
Detailed description of the invention
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is carried out clear, complete description, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention。
Below in conjunction with Fig. 1 a, 1b, 2a and 2b, describe technical scheme in detail。
As shown in Fig. 1 a, 1b, the present invention provides a kind of display floater, including array base palte 1, also include micro-electromechanical system (MEMS) (Micro-Electro-MechanicalSystem) light modulating device 2, MEMS light modulating device 2 is arranged at the incident side of array base palte 1, for controlling light therethrough, stop backlight light therethrough when MEMS light modulating device 2 is closed, allow backlight light therethrough when MEMS light modulating device 2 is opened。The incident side of array base palte 1 refers to, the backlight light that light source produces enters the side of array base palte 1。
The present invention by being arranged to control the MEMS light modulating device of light therethrough in the position of array base palte incident side, the transmitance controlling backlight light can be opened or closed by control MEMS light modulating device, thus improving the contrast of display panels, strengthen display effect, and stop backlight light therethrough by closing the light modulating device in completely black region to be shown, making the picture in this region is full black state, it is achieved that dark-state is entirely dark, it is to avoid light leakage phenomena。Furthermore, it is possible to control MEMS light modulating device and liquid crystal deflection degree are combined and improve the dynamic contrast of display panels, relative to the simple means by controlling liquid crystal deflection degree, the regulating effect of the dynamic contrast of display panels is more preferably。
Below in conjunction with Fig. 1 a and Fig. 1 b, describe the structure of the MEMS light modulating device of the present invention in detail。
Array base palte 1 divides multiple pixel cell, as seen in figure la and lb, each pixel cell includes the sub-pix of at least one color, in embodiments of the present invention, the sub-pix including tri-kinds of colors of R, G, B for a pixel cell illustrates, as shown in Figure 1a, by black matrix (BM) interval between tri-sub-pixs of R, G, B。
MEMS light modulating device 2 includes: MEMS controller (does not illustrate in figure) and multiple mems switch 21, the subpixel regions one_to_one corresponding of mems switch 21 and array base palte 1。MEMS controller is used for, and controls mems switch corresponding to each subpixel regions 21 respectively and opens or closes。
Described display floater also includes display floater controller (not illustrating in figure), carries out data transmission between MEMS controller and display floater controller, realizes the mems switch that each sub-pix is corresponding is individually controlled with turntable driving by data-driven。
Concrete, display floater controller is connected with MEMS controller, MEMS controller specifically for, according to the video data that display floater controller sends, control mems switch corresponding to each subpixel regions 21 respectively to open or close, and control the opening degree of mems switch corresponding to each subpixel regions 21 respectively。
It should be noted that MEMS controller belongs to prior art according to operation principle and the control process of display floater controller control mems switch 21, do not repeat them here。
As seen in figure la and lb, mems switch 21 includes: substrate 211 and occlusion part 212, substrate 211 and occlusion part 212 are horizontally disposed with。Occlusion part 212 can move horizontally, be positioned at substrate 211 top and with each subpixel regions one_to_one corresponding。Substrate 211 is provided with hole 213, hole 213 and each subpixel regions one_to_one corresponding。Substrate 211 adopts glass or silicon to make, and forms hole 213 by etching technics in substrate 211。
MEMS controller specifically for, the occlusion part 212 controlling mems switch corresponding to each subpixel regions 21 respectively moves horizontally, so that occlusion part 212 matches with the hole 213 of substrate 211 realizes opening or closing of mems switch 21。The part that occlusion part 212 blocks hole 213 is more many, and the transmitance of backlight light is more little, and when hole 213 is blocked by occlusion part 212 completely, mems switch 21 is closed, and backlight light cannot pass through。
In order to realize blocking the backlight light in completely black region to be shown or dark-state region, backlight light is stoped to be irradiated on each sub-pix, the video data that MEMS controller can send according to described display floater controller, controls occlusion part 212 corresponding to the subpixel regions in completely black region to be shown or dark-state region and blocks corresponding hole 213 completely。This way it is possible to avoid the dark-state brightness that the light transmission of liquid crystal itself causes, promote further and display contrast, and make the backlight light in completely black region to be shown to pass through, making the picture in this region is full black state, it is achieved that dark-state is entirely dark, solves leakage problem。
Preferably, as shown in Figure 1 b, the substrate of each mems switch 21 can be one-body molded, is connected as a single entity。
The occlusion part 212 of the mems switch 21 that each subpixel regions is corresponding can move by independent horizontal, and the occlusion part 212 of the mems switch 21 that each subpixel regions in same pixel cell is corresponding can also level of synchronization move。
Preferably, MEMS controller specifically for, control occlusion part 212 synchronizing moving of the mems switch 21 that in each pixel cell, the subpixel regions of same color is corresponding。As shown in Figure 1a, MEMS controller controls the mems switch 21 that in each pixel cell, sub-pix G region is corresponding and opens, namely control the occlusion part 212 of the mems switch 21 that sub-pix G region is corresponding in each pixel cell and do not block the hole 213 that sub-pix G region is corresponding so that backlight light can be radiated at sub-pix G region。And MEMS controller controls mems switch 21 corresponding with sub-pix B for sub-pix R in each pixel cell and cuts out, namely control the occlusion part 212 of the mems switch 21 that sub-pix R and sub-pix B region is corresponding in each pixel cell and block the hole 213 that sub-pix R and sub-pix B region is corresponding, make backlight light cannot be radiated at sub-pix R and sub-pix B region, so, display floater only shows green glow。The present invention utilizes display floater controller can individually control the mems switch that each subpixel regions is corresponding, thus realizing display floater only present the light of a certain color or varicolored mixing。
Preferably, as shown in Figure 1 b, connecting portion 214 can also be passed through between the occlusion part 212 of each mems switch 21 in each pixel cell to be connected。
MEMS controller is used for, and the connecting portion 214 controlled in each pixel cell moves horizontally, so that the occlusion part 212 that in each pixel cell, each sub-pix is corresponding hole 213 corresponding with in substrate 211 matches and realize mems switch 21 and open or close。It is to say, MEMS controller is in units of pixel cell, each mems switch 21 controlled in pixel cell links。
Below in conjunction with Fig. 2 a and Fig. 2 b, describe the structure of MEMS light modulating device in detail。
As shown in Figure 2 a and 2 b, described display floater can also include the first polaroid 3, and the first polaroid 3 is arranged at the lower section of the glass substrate (not illustrating in figure) of array base palte 1。
Described display floater can also include: the structures such as color membrane substrates 4, front frame 5, backboard 6, blooming piece 7, light guide plate 8 and LED (Light-Emitting Diode) lamp bar 9, sealed plastic box 10。Color membrane substrates 4 is arranged at the top of array base palte 1, and LED lamp bar 9, as light source, is arranged on one end of light guide plate 8。Light guide plate 8 for being transformed into area source form and uniformly penetrating from exiting surface by the light that LED lamp bar 9 sends。Blooming piece 7 is arranged on the exiting surface side of light guide plate 8, for returning in light guide plate 8 by the luminous reflectance penetrated from other surfaces except exiting surface, to improve light utilization efficiency。Front frame 5 and backboard 5 are used for supporting the structure such as LED lamp bar 9 and light guide plate 8。
The mems switch 21 of MEMS light modulating device 2 can be arranged on the lower section (referring to Fig. 2 b) of (referring to Fig. 2 a) or the first polaroid 3 between the glass substrate of array base palte 1 and the first polaroid 3。
MEMS light modulating device 2 can also include multiple supporter 22, and supporter 22 is arranged in substrate 211。It should be noted that mems switch 21 and MEMS controller need to be avoided in the position of supporter 22, and the moving horizontally of occlusion part 212 of mems switch 21 can not be hindered, namely can not affect the control to mems switch 21。
Shown in Fig. 1 a, Fig. 1 b and Fig. 2 a, when mems switch 21 is arranged between the glass substrate of array base palte 1 and the first polaroid 3, supporter 22 is between the glass substrate and the substrate 211 of mems switch 21 of array base palte 1。The substrate 211 of mems switch 21 is fitted by sealed plastic box 10 with the glass substrate of array base palte 1。
Shown in Fig. 1 a, Fig. 1 b and Fig. 2 b, when mems switch 21 is arranged on the lower section of the first polaroid 3, supporter 22 is between the first polaroid 3 and the substrate 211 of mems switch 21。The substrate 211 of mems switch 21 and the first polaroid 3 are fitted by sealed plastic box 10。
By arranging supporter in the substrate of mems switch; a space can be formed for mems switch, ensure that occlusion part has sufficient space to move horizontally on the one hand, on the other hand; when being subject to external force pressure or the distortion of panel box at display floater, it is also possible to mems switch is played a protective role。
The present invention also provides for a kind of display device, and described display device includes foregoing display floater。
When the picture needing display has subregion to light, when to have subregion be dark-state, it is possible to the mems switch in corresponding dark-state region is closed, backlight light is made to pass through, thus showing that this region of picture reaches full black state, it is achieved that dark-state is entirely dark, it is to avoid light leakage phenomena。
Normally deflecting in time due to liquid crystal and also have certain light transmission, all common IPS or TN liquid crystal display contrasts are less than 2000:1, and dark-state picture also has certain brightness。Utilize the display floater of the present invention, needing the completely black region of display, controlling corresponding mems switch and close, make backlight light to pass through, it is possible to avoid the dark-state brightness that the permeability of display floater itself causes, display contrast from raising。
When the image needing zones of different in showing picture to show different GTG respectively, ordinary display panel utilizes gamma curve to realize the division of GTG, it is possible to cannot present at some GTG and significantly distinguish effect, and contrast is not enough。And utilize the display floater of the present invention, changed from 0%～100% by relative position between opening and closing degree and occlusion part and the hole of control mems switch, control the transmitance of backlight light, realize the local brilliance control to picture, liquid crystal deflection degree in backlight light penetration and display floater can be combined and improve the dynamic contrast of display floater, improve display effect, play the effect of regional dynamics backlight in similar prior art, than simple control liquid crystal deflection degree effect more preferably。
It is understood that the principle that is intended to be merely illustrative of the present of embodiment of above and the illustrative embodiments that adopts, but the invention is not limited in this。For those skilled in the art, without departing from the spirit and substance in the present invention, it is possible to make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention。
Claims (12)
1. a display floater, including array base palte, it is characterized in that, described display floater also includes micro-electromechanical system (MEMS) light modulating device, described MEMS light modulating device is arranged at the incident side of described array base palte, for controlling light therethrough, stop light therethrough when MEMS light modulating device is closed, allow light therethrough when MEMS light modulating device is opened。
2. display floater as claimed in claim 1, it is characterised in that described array base palte divides multiple pixel cells, and each pixel cell includes the sub-pix of at least one color；
Described MEMS light modulating device includes the subpixel regions one_to_one corresponding of MEMS controller and multiple mems switch, described mems switch and array base palte；
Described MEMS controller is used for, and the mems switch controlling each subpixel regions respectively corresponding opens or closes。
3. display floater as claimed in claim 2, it is characterised in that described display floater also includes display floater controller, and described display floater controller is connected with described MEMS controller；
Described MEMS controller specifically for, according to described display floater controller send video data, the mems switch controlling each subpixel regions respectively corresponding opens or closes。
4. display floater as claimed in claim 3, it is characterized in that, described mems switch includes horizontally disposed substrate and occlusion part, described occlusion part be positioned at described substrate top and with each subpixel regions one_to_one corresponding, described substrate is provided with hole, described hole and each subpixel regions one_to_one corresponding；
Described MEMS controller specifically for, the occlusion part controlling mems switch corresponding to each subpixel regions respectively moves horizontally, so that described occlusion part matches with the hole of substrate realizes opening or closing of mems switch。
5. display floater as claimed in claim 4, it is characterized in that, described MEMS controller specifically for, according to the video data that described display floater controller sends, control occlusion part corresponding to the subpixel regions in completely black region to be shown or dark-state region and stop corresponding hole。
6. display floater as claimed in claim 4, it is characterised in that the substrate of each mems switch is connected as a single entity。
7. display floater as claimed in claim 4, it is characterised in that described MEMS controller specifically for, control the occlusion part synchronizing moving of the mems switch that in each pixel cell, the subpixel regions of same color is corresponding。
8. display floater as claimed in claim 4, it is characterised in that be connected by connecting portion between the occlusion part of each mems switch in each pixel cell；
Described MEMS controller is used for, and the connecting portion controlled in each pixel cell moves horizontally, so that the occlusion part that in each pixel cell, each sub-pix is corresponding hole corresponding with in substrate matches and realize opening or closing of mems switch。
9. display floater as claimed in claim 4, it is characterised in that described array base palte includes glass substrate, and described display floater also includes the first polaroid, and described first polaroid is arranged at the lower section of glass substrate；Described mems switch is arranged between described glass substrate and the first polaroid or the lower section of described first polaroid。
10. display floater as claimed in claim 9, it is characterised in that described MEMS light modulating device also includes multiple supporter, and above support is arranged on the substrate；
When described mems switch is arranged between described glass substrate and the first polaroid, above support is between described glass substrate and the substrate of mems switch；
When described mems switch is arranged on the lower section of described first polaroid, above support is between described first polaroid and the substrate of mems switch。
11. display floater as claimed in claim 9, it is characterised in that when described mems switch is arranged between described glass substrate and the first polaroid, the glass substrate of the substrate of described mems switch and described array base palte is fitted by sealed plastic box；
When described mems switch is arranged on the lower section of described first polaroid, the substrate of described mems switch and described first polaroid are fitted by sealed plastic box。
12. a display device, it is characterised in that include the display floater as described in any one of claim 1-11。
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| CN201610282389.2A CN105700243A (en) | 2016-04-29 | 2016-04-29 | Display panel and display device thereof |
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| CN201610282389.2A CN105700243A (en) | 2016-04-29 | 2016-04-29 | Display panel and display device thereof |
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Application publication date: 20160622 |