CN103676283A - Liquid crystal display structure provided with touch screen and used for reducing brightness of surface reflected light - Google Patents

The invention discloses a liquid crystal display structure provided with a touch screen and used for reducing the brightness of surface reflected light. The liquid crystal display structure provided with the touch screen and used for reducing the brightness of surface reflected light comprises a liquid crystal display, wherein a touch screen module and a glass cover board are sequentially arranged on a first polaroid of the liquid crystal display from bottom to top; a sticker is arranged between the first polariod and the touch screen module, and an air layer is formed; a second polariod is arranged on the upper surface or the lower surface of the touch screen module; an antireflection cladding layer is arranged on the upper side face of the glass cover board. By means of the liquid crystal display structure, the influence on the display effect of watch equipment by the environment reflected light is smaller, and the content on the screen can be watched clearly even outdoors.

A kind of liquid crystal display device structure with touch-screen that reduces surface reflection luminance brightness

Technical field

the present invention relates to a kind of liquid crystal display device structure with touch-screen.

Background technology

existing undersized touch-screen and liquid crystal display directly fit together (without air layer) can effectively solve the problem that reflectivity is high, but (Direct bonding) difficulty is large, binding yield is low, cost is high because large scale touch-screen (or surfacecti proteon/ornamental glass) and display screen are directly fitted, current most of notebook computer, desktop computer display, computer all-in-one machine, flat panel TV, electronic whiteboard and low side panel computer all adopt the bonding structure (Air bonding) (or making frame paste) of air layer.

as shown in Figure 1, existing have the bonding structure of air layer to comprise LCDs 1, first polaroid 11(the first polaroid 11 of LCDs 1 is that LCDs 1 carries) on be from bottom to top provided with successively touch-screen module 2 and glass cover-plate 3, between the periphery of the periphery of described the first polaroid 11 and touch-screen module 2, be arranged with a circle joint strip 4, joint strip 4 sticks together touch-screen module 2 and LCDs 1, and makes to form between touch-screen module 2 and LCDs 1 clearance (air layer 5).

there is the bonding structure (Air bonding) of air layer except making the increase of complete machine thickness, maximum problem is exactly that the reflectivity of display is very high, surround lighting is to watching displaying contents to have very large interference, even can make not see screen content, as: in office, computer can be subject to the impact of window light after one's death, the impact of light, need to adjust angle, computer could normally be seen in position, in parlor, see that TV need to draw curtain daytime, in classroom, use electronic whiteboard teaching, can be subject to the impact of light outside window, hold panel computer, notebook computer goes to open air not see.Specific experiment effect is as follows:

a is the incident light that shines display

t1 is that incident light A sees through the printing opacity after touch-screen module

r1 be incident light A at the reflected light of glass cover plate surfaces, the reflectivity of this surface correspondence is R1v

r2 be incident light A at the reflected light of touch-screen inside surface, the reflectivity of this surface correspondence is R2v

r3 be incident light A at the reflected light of liquid crystal display screen surfaces, the reflectivity of this surface correspondence is R3v

t2 is the light that light transmission touch-screen descendant eye that display screen sends is seen

the interface that glass, transparent membrane etc. contact with air is 4% left and right to reflection of light rate

therefore R1v ≈ 4%, R2v ≈ 4%

lCDs, because inner structure has reflection, records LCDs surface generalization reflectivity R3v ≈ 5%

with the liquid crystal display of touch-screen, when having air layer between touch-screen and LCDs, it adds up to reflectivity Rv=R1v+R2v+R3v ≈ 13%

catoptrical intensity (brightness) R=A*Rv

when environmental light brightness is at 2000Lux time, reflected light brightness R reaches 260, and the brightness T2 of display is in 250 left and right conventionally, therefore Ambient (as window, light) can disturb normal evaluation equipment to show,

and if out of doors, environmental light brightness reaches 10000Lux especially, reflected light brightness R reaches 1300, and the image on display screen does not see at all.

Summary of the invention

the present invention seeks to: a kind of liquid crystal display device structure with touch-screen that reduces surface reflection luminance brightness is provided, its upper surface at touch-screen module or lower surface have increased by the second polaroid, on the surface of glass cover-plate, set up antireflection coating simultaneously, make Ambient very little on the impact of evaluation equipment display effect, even if can more clearly watch screen content out of doors.

technical scheme of the present invention is: a kind of liquid crystal display device structure with touch-screen that reduces surface reflection luminance brightness, comprise LCDs, on the first polaroid of LCDs, be from bottom to top provided with successively touch-screen module and glass cover-plate, between described the first polaroid and touch-screen module, be provided with joint strip and be formed with air layer, the upper surface of described touch-screen module or lower surface are provided with the second polaroid, and the upper side of described glass cover-plate is provided with antireflection coating.

further, the polarization direction of described the second polaroid is consistent with the polarization direction of the first polaroid of LCDs.

advantage of the present invention is: the present invention seeks to: a kind of liquid crystal display device structure with touch-screen that reduces surface reflection luminance brightness is provided, its upper surface at touch-screen module or lower surface have increased by the second polaroid, on the surface of glass cover-plate, set up antireflection coating simultaneously, make Ambient very little on the impact of evaluation equipment display effect, even if can more clearly watch screen content out of doors.

Accompanying drawing explanation

below in conjunction with drawings and Examples, the invention will be further described:

fig. 1 is the structural representation of existing structure of the present invention;

fig. 2 is the structural representation of the embodiment of the present invention one;

fig. 3 is the structural representation of the embodiment of the present invention two.

wherein: 1 LCDs; 11 first polaroids;

2 touch-screen modules;

3 glass cover-plates;

4 joint strips;

5 air layers;

6 second polaroids;

7 antireflection coating.

Embodiment

embodiment mono-: as shown in Figure 2, a kind of liquid crystal display device structure with touch-screen that reduces surface reflection luminance brightness, comprise LCDs 1, on the first polaroid 11 of LCDs 1, be from bottom to top provided with successively touch-screen module 2, glass cover-plate 3 and antireflection coating 7, the lower surface of described touch-screen module 2 is provided with polarization direction second polaroid 6 consistent with the polarization direction of the first polaroid 11, between the periphery of the periphery of described the first polaroid 11 and the second polaroid 6, be arranged with a circle joint strip 4, joint strip 4 sticks together the second polaroid 6 and LCDs 1, and make to form air layer 5 between the second polaroid 6 and LCDs 1.

embodiment bis-: as shown in Figure 3, a kind of liquid crystal display device structure with touch-screen that reduces surface reflection luminance brightness, comprise LCDs 1, on the first polaroid 11 of LCDs 1, be from bottom to top provided with successively touch-screen module 2, glass cover-plate 3 and antireflection coating 7, between the upper surface of described touch-screen module 2 and glass cover-plate 3, be provided with polarization direction second polaroid 6 consistent with the polarization direction of the first polaroid 11, between the periphery of the periphery of described the first polaroid 11 and touch-screen module 2, be arranged with a circle joint strip 4, joint strip 4 sticks together touch-screen module 2 and LCDs 1, and make to form air layer 5 between touch-screen module 2 and LCDs 1.In this embodiment, touch-screen module 2 is between the second polaroid 6 and LCDs 1, and this touch-screen module 2 should be used isotropic material to make.

as shown in Figures 2 and 3, in above-mentioned two embodiment, upper surface or lower surface at touch-screen module have increased by the second polaroid, on the surface of glass cover-plate, set up antireflection coating simultaneously, make Ambient very little on the impact of evaluation equipment display effect, even if can more clearly watch screen content out of doors.Specific experiment effect is as follows:

a is the incident light that shines display

t1 is that incident light A sees through the printing opacity after touch-screen module

r1 be incident light A at the reflected light of glass cover plate surfaces, the reflectivity of this surface correspondence is R1v

r2 be incident light A at the reflected light of touch-screen inside surface, the reflectivity of this surface correspondence is R2v

r3 be incident light A at the reflected light of liquid crystal display screen surfaces, the reflectivity of this surface correspondence is R3v

t2 is the light that light transmission touch-screen descendant eye that display screen sends is seen

under the effect of antireflection coating, R1v≤0.4%, presses R1v=0.4% here and calculates

R2v≈4%，R3v≈5%

and through the filtration of the second polaroid 6, the intensity of T1 reduces half

T1=A*1/2

r2 reflects away the filtration through second polaroid 6 again

same R3 also reduces by a half intensity through the filtration of the second polaroid 6

R=A*R1v+T1*R2v*1/2+T1*R3v*1/2=?A*(R1v+?R2v*1/4+R3v*1/4)

and R=A*Rv

be Rv=R1v+ R2v*1/4+R3v*1/4 ≈ 0.4%+4%*1/4+5%*1/4 ≈ 2.65%

now

when environmental light brightness is at 2000Lux time, reflected light brightness R only 53, and the brightness of display is in 250 left and right, therefore the impact that Ambient (as window, light) shows evaluation equipment is very little conventionally; And if out of doors, environmental light brightness has 10000Lux, now reflected light brightness R has been reduced to about 265Lux, compares originally 1300, has reduced closely 80%, can more clearly watch screen content out of doors.

below be only concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on the present invention's scope required for protection.