CN204515299U - The negative aobvious liquid crystal display of a kind of high twist orientation array type - Google Patents
The negative aobvious liquid crystal display of a kind of high twist orientation array type Download PDFInfo
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- CN204515299U CN204515299U CN201520164470.1U CN201520164470U CN204515299U CN 204515299 U CN204515299 U CN 204515299U CN 201520164470 U CN201520164470 U CN 201520164470U CN 204515299 U CN204515299 U CN 204515299U
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Abstract
The utility model belongs to technical field of liquid crystal display, disclose the negative aobvious liquid crystal display of a kind of high twist orientation array type, comprise screen, lower screen, frame (9), and upper screen, liquid crystal (10) in the closed space that lower screen and frame (9) are formed and spacer (11), described upper screen comprises the upper polaroid (1) connected successively from top to bottom, upper sheet glass (2), upper electrode layer (3) and upper oriented layer (4), described lower screen comprises the lower polaroid (5) connected successively from bottom to up, lower sheet glass (6), lower electrode layer (7) and lower oriented layer (8), described frame (9) is supported between described upper electrode layer (3) and lower electrode layer (7) determines that the box of liquid crystal cell is thick, described box is thick is 7 μm, the angle in the described direction of upper oriented layer (4) groove and the direction of lower oriented layer (8) groove is 130 degree, adjustment liquid crystal Δ n, Δ n × d (box is thick) and polaroid is made to reach optimum matching effect.The utility model meets background color and improves the requirement of contrast, and the easy management and control of batch consistance, reduces the cost of liquid crystal display.
Description
Technical field
The utility model belongs to LCD Technology field, particularly relates to the negative aobvious liquid crystal display of a kind of high twist orientation array type.
Background technology
Liquid crystal display is through development for many years, be widely used in the middle of electronic equipment miscellaneous, for completing the function of image display or instruction, modal liquid crystal indicator, such as, usually there is TN (twisted nematic) liquid crystal cell of 90 degree of twist angles, there is STN (super-twist nematic) liquid crystal cell of 180 degree of-270 degree twist angle usually, and there is HTN (high twist orientation array type) liquid crystal cell of 110 degree of twist angles.Twist angle is that nematic liquid crystal molecules is sandwiched between two blocks of clear glasses, between layer glass, and the orientation deflection angle of liquid crystal molecule.Liquid crystal display generally has just aobvious and negative aobvious dividing, just aobvious: to be exactly briefly white gravoply, with black engraved characters, is also the dark character of light background, negative aobvious: to be exactly briefly black matrix wrongly written or mispronounced character, is also the light character of dark-background, generally will adds backlight and just can reach display effect.During negative aobvious liquid crystal display is generally applied to, low side onboard instruments, other instrument, in instrument, in the prior art, it is all by adjusting polaroid angle or using blue polaroid to realize the more blue effect of background color that the blue film of HTN of LCD manufacturer bears aobvious full impregnated product major part, on the one hand, owing to adopting blue polaroid, cost is higher, the holistic cost making the blue film of HTN bear aobvious liquid crystal display is higher, be unfavorable for the employing of low-end electronic equipment, greatly limit the application that the blue film of this kind of HTN bears aobvious liquid crystal display; On the other hand, adjustment polaroid angle crosses the polarizing axis of ambassador's polaroid and the Δ n (birefraction of LCD, represent refractive anisotrop, namely the characteristic of light course is affected during light penetration liquid crystal) × d (box is thick) matching effect is poor, very large on the integral bottom Color uniformity of LCD, contrast, angular field of view impact.Because the light vibration of polaroid to different directions has the performance of Selective absorber, thus make to have in polaroid a special direction, when a branch of natural light is mapped on polaroid, the light vibration component that direction is vertical is therewith absorbed completely, only allow and parallelly to pass through with the light vibration component in this direction, this specific direction is exactly the polarization direction of polaroid, namely the optical axis of polaroid.HTN bears display mode, the polarizing axis of upper and lower polaroid is parallel, the linearly polarized photon of the parallel incidence of upper polaroid is made to become vertical linearly polarized photon by the refraction of liquid crystal in LCD, absorbed completely by lower polaroid, light transmission minimum, just the most black (the most blue), contrast just can be the highest for the background color of LCD.Adjustment polaroid optical axis angle, the linearly polarized photon after liquid crystalline refractive can not be vertical with the polarizing axis of lower polaroid, and linearly polarized photon can not absorb completely, through light be not minimum, the background color of LCD is not the most black (the most black), and contrast also can decline.The batch consistance that the adjustment of above-mentioned two aspects all can make the blue film of HTN bear aobvious liquid crystal display is poor, because LCD is whole to production, the grain number in centre position and the grain number of surrounding position are subject to the impact of the aspects such as spacer density, hot pressing pressure, border width, heating temperature in process of production, the thick homogeneity of box can be variant, therefore adjusts polaroid angle and the difference that box is thick can be made more obvious.
Utility model content
The object of the utility model embodiment is to provide a kind of high twist orientation array type negative aobvious liquid crystal display, can reach background color requirement and reduce costs.
The utility model embodiment is achieved in that
The negative aobvious liquid crystal display of a kind of high twist orientation array type, comprise screen, lower screen, frame, and upper screen, liquid crystal in the closed space that lower screen and frame are formed and spacer, described upper screen comprises the upper polaroid connected successively from top to bottom, upper sheet glass, upper electrode layer and upper oriented layer, described lower screen comprises the lower polaroid connected successively from bottom to up, lower sheet glass, lower electrode layer and lower oriented layer, described frame is supported between described upper electrode layer and lower electrode layer determines that the box of liquid crystal cell is thick, described box is thick is 7 μm, the angle in the direction of described upper oriented layer groove and the direction of lower oriented layer groove is 130 degree, the thick d of birefraction Δ n × box is 680nm to 700nm.
The negative aobvious liquid crystal display of described a kind of high twist orientation array type, also comprise the firing point be connected between upper electrode layer and lower electrode layer, described firing point is 7 μm.
The utility model embodiment is by being set to 7 μm by thick for the box of liquid crystal cell, the angle adjusting the direction of upper and lower oriented layer groove is 130 degree with the distortion angle of grappling liquid crystal molecule, and accommodation liquid crystal Δ n, Δ n × d (box is thick) and polaroid is made to reach optimum matching effect, meet the requirement of background color and raising contrast, make HTN bear aobvious liquid crystal display and there is higher contrast: contrast is greater than 16; Do not reach background color requirement by adjustment polaroid angle, reduce the requirement to LCD white tiles background color homogeneity, the easy management and control of batch consistance; Do not use blue polaroid, reduce costs, in meeting, the demand of the vehicle-mounted produce market of low side, be beneficial to and increase the market capacity that HTN bears aobvious liquid crystal display.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of LCDs of the present utility model;
Fig. 2 to be twisted liquid crystal molecules angle be schematic diagram of 110 degree;
Fig. 3 to be twisted liquid crystal molecules angle be schematic diagram of 130 degree.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model embodiment is by being set to 7 μm by thick for the box of liquid crystal cell, the angle adjusting the direction of upper and lower oriented layer groove is 130 degree with the distortion angle of grappling liquid crystal molecule, and accommodation liquid crystal Δ n, Δ n × d (box is thick) and polaroid is made to reach optimum matching effect, meet the requirement of background color and raising contrast, make HTN bear aobvious liquid crystal display and there is higher contrast: contrast is greater than 16; Do not reach background color requirement by adjustment polaroid angle, reduce the requirement to LCD white tiles background color homogeneity, the easy management and control of batch consistance; Do not use blue polaroid, reduce costs, in meeting, the vehicle-mounted produce market of low side, being beneficial to increases HTN and bears the market capacity of aobvious liquid crystal display.
Below in conjunction with specific embodiment, specific implementation of the present utility model is described in detail:
As shown in Figure 1, the basic structure schematic diagram of LCDs, the negative aobvious liquid crystal display of high twist orientation array type of the embodiment of the present invention, comprise screen, lower screen, frame 9, and upper screen, liquid crystal 10 in the closed space that lower screen and frame 9 are formed and spacer 11, described upper screen comprises the upper polaroid 1 connected successively from top to bottom, upper sheet glass 2, upper electrode layer 3 and upper oriented layer 4, described lower screen comprises the lower polaroid 5 connected successively from bottom to up, lower sheet glass 6, lower electrode layer 7 and lower oriented layer 8, described frame 9 is supported between described upper electrode layer 3 and lower electrode layer 7 determines that the box of liquid crystal cell is thick, that is the spacing between upper electrode layer 3 and lower electrode layer 7, described box is thick is 7 μm, the angle in the direction of described upper oriented layer 4 groove and the direction of lower oriented layer 8 groove is 130 degree, it is 130 degree that the distortion angle of liquid crystal molecule is anchored, adjustment liquid crystal Δ n, Δ n × d (box is thick) and polaroid is made to reach optimum matching effect, the thick d of birefraction Δ n × box is made to be 680nm to 700nm, simultaneously, firing point 12 is connected between upper electrode layer 3 and lower electrode layer 7, it also does corresponding change, namely 7 μm are changed into.
Fig. 2 to be twisted liquid crystal molecules angle be schematic diagram of 110 degree; Fig. 3 to be twisted liquid crystal molecules angle be schematic diagram of 130 degree.For dextrorotation 6:00 visual angle, angle, the groove namely after friction on glass oriented layer and the angle of plane drawing Y-axis of 55 degree in figure and 65 degree glass working direction when being Y-axis and friction in plane drawing.
When manufacturing liquid crystal display, need to guarantee that liquid crystal layer gap is certain thickness, it is thick that this thickness is called box usually.The box little like this for preparation is thick, and ensure the homogeneity for guaranteeing liquid crystal layer gap, some waddings must be added in envelope frame material, this wadding has many kinds, now conventional is the bar-shaped glass fibre of uniform diameter, simultaneously also some waddings of uniformly dispersing (i.e. spacer) in viewing area.The thickness of liquid crystal layer, to get up two panels glass support formed gap by these waddings exactly.
The key property of polaroid has a fixing polarizing axis, the effect of polaroid is that a light that allowable vibration direction is identical with its polarizing axis direction passes through, and the direction of vibration light vertical with polarizing axis will be absorbed, like this, after natural light is by the incident polaroid of liquid crystal cell, the light that only remaining direction of vibration is identical with polarizer polarizing axis, polaroid penetrates through outgoing polaroid after liquid crystal cell again, thus control realization display effect.
The effect of oriented layer is the arrangement making liquid crystal molecule present rule in certain direction with angle, has good chemical stability.The liquid crystals twist degree of different shape is also different, and after applying a certain size voltage to the electrode on two blocks of glass sheet, liquid crystal molecule just changes into and arranges perpendicular to upper lower-glass, and distorted-structure disappears, and causes optically-active event resolves.For TN-LCD, the liquid crystal display of white gravoply, with black engraved characters type, upper and lower polaroid is orthogonal placement, and namely polarizing axis is mutually vertical, incident natural light complanation polarized light after upper polaroid, when the non-added electric field of liquid crystal cell, polarized light is by the distorted-structure distortion 90 degree along molecule, and direction of vibration becomes consistent with the polarizing axis of lower polaroid, therefore can pass through end polaroid smoothly, at this moment the transparent state of display, is in non-display state.Upon application of a voltage, this partial liquid crystal molecular distortion structure disappears, and loses optical activity, to have arrived time polaroid from the direction of polarized light of upper polaroid incidence without change, due to cannot through lower polaroid, this show electrode part just becomes opaque like this, present black, be in display state.After voltage is removed, liquid crystal molecule is subject to the effect of alignment layer surface grappling, and has recovered original aligned twisted, and display becomes again transparent.For the liquid crystal display of white with black font, the polarizing axis direction of upper and lower polaroid is parallel to each other, and during non-like this making alive signal, display is in lighttight " secretly " state, is transparent " bright " state after making alive.Known, in the utility model embodiment, the polarizing axis of upper polaroid is parallel with the polarizing axis of lower polaroid.
In addition, in the utility model, do not adopt blue polaroid, the effect of blue light and background color indigo plant is realized by the birefringence of liquid crystal.
In embodiment of the present utility model, by developing new box technique processed and select steepness, dispersion, the better liquid crystal of refractive index, blue polaroid and rotating polarization sheet angle is not used to bear the high-contrast of aobvious full impregnated product, effect that background color is attractive in appearance to realize the blue film of HTN.
The foregoing is only preferred embodiment of the present utility model; be not limited to the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. the negative aobvious liquid crystal display of high twist orientation array type, comprise screen, lower screen, frame, and upper screen, liquid crystal in the closed space that lower screen and frame are formed and spacer, described upper screen comprises the upper polaroid connected successively from top to bottom, upper sheet glass, upper electrode layer and upper oriented layer, described lower screen comprises the lower polaroid connected successively from bottom to up, lower sheet glass, lower electrode layer and lower oriented layer, described frame is supported between described upper electrode layer and lower electrode layer determines that the box of liquid crystal cell is thick, it is characterized in that: described box is thick is 7 μm, the angle in the direction of described upper oriented layer groove and the direction of lower oriented layer groove is 130 degree, the thick d of liquid crystal birefringence rate Δ n × box is 680nm to 700nm.
2. the negative aobvious liquid crystal display of a kind of high twist orientation array type according to claim 1, it is characterized in that, also comprise the firing point be connected between upper electrode layer and lower electrode layer, described firing point is 7 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164470.1U CN204515299U (en) | 2015-03-23 | 2015-03-23 | The negative aobvious liquid crystal display of a kind of high twist orientation array type |
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| CN201520164470.1U CN204515299U (en) | 2015-03-23 | 2015-03-23 | The negative aobvious liquid crystal display of a kind of high twist orientation array type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168721A (en) * | 2016-08-31 | 2016-11-30 | 亚世光电股份有限公司 | Bright scene display and key manufacturing technology thereof under a kind of color background |
| CN114815365A (en) * | 2021-01-28 | 2022-07-29 | 合肥京东方光电科技有限公司 | Display module assembly and display device |
-
2015
- 2015-03-23 CN CN201520164470.1U patent/CN204515299U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168721A (en) * | 2016-08-31 | 2016-11-30 | 亚世光电股份有限公司 | Bright scene display and key manufacturing technology thereof under a kind of color background |
| CN114815365A (en) * | 2021-01-28 | 2022-07-29 | 合肥京东方光电科技有限公司 | Display module assembly and display device |
| CN114815365B (en) * | 2021-01-28 | 2024-05-10 | 合肥京东方光电科技有限公司 | Display module and display device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20200323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |