CN102298230B

CN102298230B - Liquid crystal display device

Info

Publication number: CN102298230B
Application number: CN 201110244352
Authority: CN
Inventors: 焦峰
Original assignee: Nanjing CEC Panda LCD Technology Co Ltd
Current assignee: Nanjing CEC Panda LCD Technology Co Ltd
Priority date: 2011-08-25
Filing date: 2011-08-25
Publication date: 2013-03-27
Anticipated expiration: 2031-08-25
Also published as: CN102298230A

Abstract

The invention discloses a liquid crystal display device, which comprises an array substrate and a color film substrate which are oppositely arranged. A frame seal is coated on the array substrate or the color film substrate; a display zone is arranged in the zone of the frame seal; and a thermal expansion material is arranged in a zone from the peripheral edge of the display zone to the inner side of the frame seal. In the liquid crystal display device, through arranging the thermal expansion material of certain area in the zone from the peripheral edge of the display zone to the inner side of the frame seal, the size of the material can be expanded through laser heating, thereby, the bad phenomena that bubbles are caused because the amount of liquid crystal in a liquid crystal box is less, and the like, can be repaired, and the yield of the liquid crystal display device is increased.

Description

Liquid crystal indicator

Technical field

The present invention relates to a kind of display device, particularly a kind of liquid crystal indicator.

Background technology

Traditional CRT monitor relies on the fluorescent powder on the cathode-ray tube (CRT) electron emission bump screen to show image, but the principle of liquid crystal display is then fully different.Usually, liquid crystal indicator (LCD) has upper substrate (color membrane substrates) and infrabasal plate (array base palte), have each other certain intervals and mutually over against.Be formed on two substrates a plurality of electrodes mutually over against.Liquid crystal is clipped between upper substrate and the infrabasal plate.Voltage is applied on the liquid crystal by the electrode on the substrate, thereby the arrangement that then changes liquid crystal molecule according to the voltage that acts on shows image, because liquid crystal indicator utilizing emitted light not as mentioned above, and it needs light source to show image.Therefore, liquid crystal indicator has the backlight that is positioned at the liquid crystal panel back.Thereby show image according to the arrangement of liquid crystal molecule control from the light quantity of backlight incident.As shown in Figure 1, accompany glass substrate, colored filter, electrode, liquid crystal layer and transistor film between two polaroids, liquid crystal molecule is the material with refractive index and dielectric constant anisotropy.The light that backlight sends becomes the polarized light with certain polarization direction through lower polaroid.Institute's making alive between the transistor controls electrode, and this voltage acts on the polarization direction that liquid crystal is controlled polarized light, polarized light forms monochromatic polarized light after seeing through corresponding color film chromatograph, if polarized light can penetrate the upper strata polaroid, then demonstrates corresponding color; Electric field intensity is different, and the deflection angle of liquid crystal molecule is also different, and the light intensity that sees through is different, and the brightness of demonstration is also different.The combination of the different light intensity by three kinds of colors of RGB shows motley image.

Liquid crystal panel is made flow process, make color membrane substrates and array base palte, in color membrane substrates or array base palte coating one circle sealed plastic box, use the liquid crystal dripping device an amount of liquid crystal that in the zone that sealed plastic box surrounds, drips, in vacuum environment, another piece substrate is fitted with it, use UV-irradiation and thermmohardening to make sealed plastic box sclerosis fixing (sealed plastic box moulding), prevent that color membrane substrates and array base palte are because being subjected to external force that the skew dislocation occurs, and causing the decline of aligning accuracy, impact shows.Fig. 2 is the floor map of display panels.

As shown in Figure 3, because under liquid crystal drop in the engineering, the precision of dripping of liquid crystal has certain scope, if every amount of liquid crystal is on the low side, so total amount of liquid crystal will be on the low side.As shown in Figure 4, the thickness of the liquid crystal cell of design has certain, and the height that the inside is used for the thick sept of support liquid crystal cell also is certain.When amount of liquid crystal was on the low side, because the distortion of sept is less, this place will not have liquid crystal to fill, and causes vacuum, just looked like the appearance of bubble one by one from phenomenon, i.e. so-called liquid crystal bubbles bad phenomenon, as shown in Figure 5.

Summary of the invention

Goal of the invention: for the problem and shortage of above-mentioned existing existence, the purpose of this invention is to provide a kind of liquid crystal indicator that reduces owing to the amount of liquid crystal bad phenomenon such as bubble that cause on the low side in the liquid crystal cell.

Technical scheme: for achieving the above object, the technical solution used in the present invention is a kind of liquid crystal indicator, comprise the array base palte and the color membrane substrates that are oppositely arranged, scribble sealed plastic box at described array base palte or color membrane substrates, one viewing area is arranged in the sealed plastic box zone, in the zone of sealed plastic box inboard, be provided with thermal expansion material in the edge of described viewing area.

The shape of described thermal expansion material can be strip or bulk.The thickness of described thermal expansion material can be 0.5um to 2um.The expansion of described thermal expansion material begins temperature can be not less than 150 ℃.Described thermal expansion material can be the quick expanded material of photo-thermal.The quick expanded material of described photo-thermal can be thermoplastic resin.

Beneficial effect: the present invention is by arranging the thermal expansion material of certain area in the zone of sealed plastic box inboard in the edge of viewing area, can make the volumetric expansion of this material by LASER HEATING, can repair thus owing to the amount of liquid crystal bad phenomenon such as bubble that cause on the low side in the liquid crystal cell, improve the yields of liquid crystal display device.

Description of drawings

Fig. 1 is the arraying bread board synoptic diagram of traditional active matrix liquid crystal display apparatus;

Fig. 2 is the floor map of traditional display panels;

Fig. 3 is the distribution schematic diagram of liquid crystal drop of liquid crystal of dripping in the viewing area in the engineering under the liquid crystal drop;

Fig. 4 is the sectional schematic diagram in traditional liquid crystal cell;

Fig. 5 is the liquid crystal bubbles synoptic diagram;

Fig. 6 is for the region division to the sealed plastic box inboard has the strip of certain intervals or the expanding material synoptic diagram of bulk figure in the edge of the viewing area of liquid crystal display device;

Fig. 7 is the sectional schematic diagram of section part among Fig. 6;

Fig. 8 is sectional schematic diagram after the expansion of section part among Fig. 6.

Embodiment

Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.

As shown in Figure 6, by the thermal expansion material of certain area is set in the zone of sealed plastic box inboard in the edge of the viewing area of liquid crystal display device.This material can use the mode of coating to be arranged in the appointed area, and to 2um, the figure of coating can be strip or the bulk figure that certain intervals is arranged to thickness at 0.5um.Fig. 7 is Fig. 6 section part synoptic diagram.This expanding material can be the quick expanded material of photo-thermal that contains the thermoplastic resins such as fluorochemicals, tetraalkyl silane, azodicarbonamide, behind irradiating laser, begin thermal expansion, the beginning temperature that expands is more than 150 ℃, this material not with used liquid crystal cell in other materials react.When having liquid crystal bubbles to occur, measure first the diameter of bubble, calculate the area of bubble, then multiply by box thick is exactly the volume that needs thermal expansion to fill, then according to the thermal expansion multiplying power, just can know the area in requisition for Ear Mucosa Treated by He Ne Laser Irradiation, use laser beam to the strip of certain intervals or the thermal expansion material irradiation of bulk figure it to be heated to more than the expansion beginning temperature, produce volumetric expansion, as shown in Figure 8.Like this along with the expanded by heating of thermal expansion material, the volume of liquid crystal bubbles is additional, and the bad phenomenon of liquid crystal bubbles will disappear, and liquid crystal bubbles is bad to be repaired.

Claims

1. liquid crystal indicator, comprise the array base palte and the color membrane substrates that are oppositely arranged, scribble sealed plastic box at described array base palte or color membrane substrates, one viewing area is arranged in the sealed plastic box zone, it is characterized in that: the edge in described viewing area is provided with thermal expansion material in the zone of sealed plastic box inboard, make the volumetric expansion of thermal expansion material by LASER HEATING.

2. described liquid crystal indicator according to claim 1 is characterized in that: described thermal expansion material be shaped as strip or bulk.

3. described liquid crystal indicator according to claim 1, it is characterized in that: the thickness of described thermal expansion material is 0.5um to 2um.

4. described liquid crystal indicator according to claim 1, it is characterized in that: the expansion of described thermal expansion material begins temperature and is not less than 150 ℃.

5. according to claim 1 to 4 each described liquid crystal indicators, it is characterized in that: described thermal expansion material is the quick expanded material of photo-thermal.

6. described liquid crystal indicator according to claim 5, it is characterized in that: the quick expanded material of described photo-thermal is thermoplastic resin.