CN2844972Y

CN2844972Y - Pseudo color liquid crystal display device

Info

Publication number: CN2844972Y
Application number: CN 200520035673
Authority: CN
Inventors: 胡淑华; 李铁
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2005-09-28
Filing date: 2005-09-28
Publication date: 2006-12-06
Anticipated expiration: 2015-09-28

Abstract

The utility model discloses a pseudo color liquid crystal display device which comprises an upper transparent base plate and a lower transparent base plate which are mutually faced, wherein the plate surfaces of the inner sides of the upper transparent base plate and the lower transparent base plate are respectively attached with a transparent electrode, a liquid crystal layer is sealed between the upper transparent base plate and the lower transparent base plate, the plate surface of the outer side of the upper transparent base plate is attached with an upper light polarized sheet, the plate surface of the outer side of the lower transparent base plate is attached with a lower light polarized sheet and a color oil film is attached on the lower transparent base plate. The utility model solves the problem that the color of a black and white liquid crystal display device is monotonic and uniform. A display effect on a single color or a plurality of colors for a good color saturation and a good contrast grade can be obtained. The feeling enjoyment on visual sensation for people is satisfied. The utility model has the advantages of simple structure and low cost. The pseudo color liquid crystal display device has good quality and low price for middle and low grade markets, and a better performance and price ratio is obtained.

Description

A kind of pseudo-colours LCD

[technical field]

The utility model relates to a kind of LCD, relates in particular to a kind of pseudo-colours LCD.

[background technology]

Existing LCD is just striding forward the epoch of CSTN and TFT by the epoch of FSTN.The structural drawing of the FSTN LCD of white-black pattern as shown in Figure 1, from watching a side to comprise following structural sheet successively: go up polaroid 1, go up transparency carrier 2, first transparency electrode 3, liquid crystal layer 4, second transparency electrode 5, transparency carrier 10, polaroid 11 down down, simple in structure, low cost of manufacture, be mainly used in liquid crystal display simple, low side, for example the secondary display screen of counter, mobile phone etc.The structural drawing of the CSTN of color mode and TFT LCD as shown in Figure 2, from watching a side to comprise following structural sheet successively: go up polaroid 1, last transparency carrier 2, first transparency electrode 3, liquid crystal layer 4, second transparency electrode 5, insulation course 6, regularly arranged three primary colors color filter film 7 and be formed at black matrix" 8 between each colour element of color filter film 7, reflection horizon 9 (the full-transparency type LCD is this layer not), following transparency carrier 10, following polaroid 11, complex structure, the manufacturing cost height, be mainly used in high-end liquid crystal display, for example PDA, high-end electronic dictionary, the main display of mobile phone etc.Along with the raising that people's vision requires, the LCD of white-black pattern has not satisfied the requirement of people in riotous profusion color, but the manufacturing cost height of CSTN and TFT makes its application in some respects be subjected to restriction.Therefore produced contradiction between the cost of requirement of people's vision and product.

[summary of the invention]

Invention fundamental purpose of the present utility model is exactly in order to solve problems of the prior art, provide a kind of simple in structure, make pseudo-colours LCD simple, low cost of manufacture, satisfy the requirement that people's vision shows colour.

Of the present utility model time a purpose provides a kind of pseudo-colours LCD, and it also can be shown under no situation backlight.

For achieving the above object, a kind of pseudo-colours LCD that the utility model proposes, comprise that opposed facing, interior plate face is attached with the last transparency carrier and the following transparency carrier of transparency electrode respectively, between last transparency carrier and following transparency carrier, be sealed with liquid crystal layer, outer panel face at last transparency carrier is attached with polaroid, polaroid under the outer panel face of transparency carrier is attached with down is being attached with colored oil film on the transparency carrier down.

Preferably, described colored oil film is down between transparency carrier and the following polaroid.

Also comprise the backlight below the polaroid under being positioned at.

Further improvement of the utility model is: described polaroid down is the polaroid of full impregnated or semi-transflective reflective.

The beneficial effects of the utility model are: 1) the utility model is to simplify on the basis of general colour liquid crystal display device, utilize general colored displaying principle, on the basis of former monochrome liquid crystal display, improved, the regularly arranged three primary colors color filter film of colour liquid crystal display device is become simple colored oil film, colored oil film can be one deck monochrome ink, also can be the printing ink of one deck polychrome, because need not distinguish pixel again, also not be used in painting black matrix between the pixel, simplify the structure, so manufacturing cost reduces greatly, and, because the high permeability of colored oil film, when light passes through, can realize colored the demonstration, satisfy people's vision requirement.2) colored oil film is produced on down between transparency carrier and the following polaroid, technology is simple, less demanding to membrane uniformity, and cost of manufacture is low.3) polaroid is with the polaroid of semi-transflective reflective down, and when backlight was not lighted, following polaroid entered people's sight at last with colored oil film of the incident light reflected back in the external world and liquid crystal layer.When backlight was lighted, following polaroid transmission part light was added the light of reflection, has increased brightness, thereby the utility model when not lighting, can show little colour backlight; During backlight lightening, can make colour more bright-coloured.

Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.

[description of drawings]

Fig. 1 is the sectional structure chart of monochrome liquid crystal display of the prior art;

Fig. 2 is the sectional structure chart of semi-permeable colorful LCD of the prior art;

Fig. 3 is the structural representation of a kind of pseudo-colours LCD embodiment of the present utility model.

[embodiment]

As shown in Figure 3, LCD comprises following structural sheet successively according to the incident direction (or from watching a side) of surround lighting: last polaroid 1, last transparency carrier 2, first transparency electrode 3, liquid crystal layer 4, second transparency electrode 5, following transparency carrier 10, colored oil film 12 and following polaroid 11.Last transparency carrier 2 and following transparency carrier 10 can adopt transparent glass substrate, liquid crystal layer 4 can be nematic liquid crystal, liquid crystal layer 4 is sealed between transparency carrier 2 and the following transparency carrier 10, side near liquid crystal layer 4 on the last transparency carrier 2 is formed with first transparency electrode 3, (tin indium oxide is In with ITO usually to be formed with second transparency electrode, 5, the first transparency electrodes 3 and second transparency electrode 5 near a side of liquid crystal layer 4 on the following transparency carrier 10 ₂O ₃) the electrically conducting transparent film production, so also claim the ITO electrode, glass substrate also claims ito glass.Colored oil film 12 can be monochromatic oil lamella, also can or form the colored oil lamella of certain pattern for polychrome.Below following polaroid, backlight is set.Following polaroid 11 can be common polaroid, also can be the polaroid of full impregnated or semi-transflective reflective, when polaroid 11 is the polaroid of semi-transflective reflective instantly, can make LCD become the pseudo-colours LCD of semi-transflective reflective, when not lighting, show little colour backlight; During backlight lightening, can make colour more bright-coloured.

The making flow process of the pseudo-colours LCD of present embodiment may further comprise the steps:

1. choose the glass substrate that is coated with ITO, the coating photoresist makes the ITO electrode glass behind the exposure imaging.

2. the ITO electrode glass is fitted into box up and down, and the perfusion sealing liquid crystal.

3. at ito glass surface coated skim colour filter printing ink.

4. polaroid under attaching on oil film and the lower glass substrate attaches upper polarizer on top glass substrate.Following polaroid is the semi-transflective reflective polaroid.

5. loading onto BLG behind the polaroid under the pseudo-colours LCD of this embodiment.

Above-mentioned colored oil film also can be positioned at the medial surface of transparency carrier down, is produced on down between the transparency carrier and second transparency electrode.

In sum, the utility model solve common FSTN and CSTN, TFT gap, solved The problem of the dull homogeneous of the color of monochrome liquid crystal display makes it reach good color saturation and right Monochrome or multicolor displaying effect than degree have little reflective display function, satisfy people's visual sensory and enjoy Be subjected to, and cost is low, for certain market demand provides assurance. Pseudo color liquid crystal display device in Low-end market is beyond doubt inexpensive, has reached better cost performance.

Claims

1. pseudo-colours LCD, comprise that opposed facing, interior plate face is attached with the last transparency carrier and the following transparency carrier of transparency electrode respectively, between last transparency carrier and following transparency carrier, be sealed with liquid crystal layer, outer panel face at last transparency carrier is attached with polaroid, polaroid under the outer panel face of transparency carrier is attached with down is characterized in that: be attached with colored oil film on the transparency carrier down.

2. pseudo-colours LCD as claimed in claim 1 is characterized in that: described colored oil film is down between transparency carrier and the following polaroid.

3. pseudo-colours LCD as claimed in claim 2 is characterized in that: described polaroid down is the polaroid of full impregnated or semi-transflective reflective.