CN201035278Y

CN201035278Y - Semi-penetrate color liquid-crystal display

Info

Publication number: CN201035278Y
Application number: CNU2007200506998U
Authority: CN
Inventors: 李永忠; 沈奕; 杨秋强; 陈伟川; 许为隆; 魏家华
Original assignee: Shantou Goworld Display Co Ltd
Current assignee: Shantou Goworld Display Co Ltd
Priority date: 2007-04-19
Filing date: 2007-04-19
Publication date: 2008-03-12
Anticipated expiration: 2017-04-19

Abstract

The utility model relates to a semitransparent colorful liquid crystal displayer, and is characterized in that from the back light source to the outside light source, the utility model is orderly provided with a transparence auxiliary layer, a lower Polaroid sheet, a glass base plate, a reflecting film, a diffuse reflection layer, a colorful light filter film, an OC layer, an ITO layer, an alignment layer, sarking and liquid crystal, an alignment film, an ITO layer, a glass base plate and an upper Polaroid sheet; wherein, the colorful light filter film, the diffuse reflection layer, the reflecting layer and the transparence auxiliary layer are combined into a mixed structure. Compared with the prior art, the semitransparent colorful liquid crystal displayer of the utility model can obtain the vivid picture when the back light shines; when the back light is out, the utility model can form a colorful display picture; the colorful content relates to the area between the colorful light filter film and reflecting layer; and in the sunshine, the picture does not glare the eyes, and the visual angle is wider than the prior product.

Description

The semi-permeable colorful LCD

Technical field

The utility model relates to a kind of LCD, more specifically to a kind of semi-permeable colorful LCD.

Background technology

The method for making of existing semi-permeable colorful LCD has multiple, as adopts different reflective film materials, control reflectance coating and color filter film perforate etc.But these displays still are some problems of ubiquity: pixel point areas must according to the requirement of human-eye visual characteristic make very little, the light that uses according to the reflective surface area of present design is difficult to satisfy actual requirement, brightness is not enough; But when extraneous light was excessive, phenomenons such as dizzy eye appearred again in present design easily.

As shown in Figure 1, the structure of existing common semi-permeable colorful LCD is as follows:

Plated aluminum reflectance coating and color filter film on glass substrate, and according to certain reflection aperture opening ratio and the making of transmissive apertures rate, from backlight toward outside light source direction, be followed successively by down polaroid 1, glass substrate 2, reflectance coating 3, color filter film 4, OC layer 5, ITO layer 6, both alignment layers 7, pad material and liquid crystal 8, alignment film 9, ITO layer 10, glass substrate 11 and upper polarizer 12.

Summary of the invention

The purpose of this utility model is that prior art is improved, a kind of semi-permeable colorful LCD is provided, when backlight lightening, can obtain bright-coloured picture display effect, not lighting when backlight, can wait until colored preferably display effect, can obtain the display effect of not dizzy eye in the sun, and the visual angle is broader than common product, and the technical scheme of employing is as follows:

Semi-permeable colorful LCD of the present utility model, it is characterized in that: from backlight toward outside light source direction, be followed successively by and help layer, down polaroid, glass substrate, reflectance coating, diffuse reflector, color filter film, OC layer (covering coating), ITO layer (indium tin oxide layer), both alignment layers, pad material and liquid crystal, alignment film, ITO layer, glass substrate and upper polarizer, wherein color filter film, diffuse reflector, reflection horizon and help a layer composition mixed structure.

Color filter film, diffuse reflector, reflection horizon, the mixed structure that helps layer and OC layer to form, the effect of its major part is as follows:

Help layer: i.e. reinforcing membrane, help the repeatedly utilization of light, improve brightness;

The reflection horizon: very high reflectivity, reflection of light reaches the colored effect that shows under the high light to external world;

Diffuse reflector: high light can be avoided the effect of dizzy eye down, and can improve angular field of view;

Color filter film: realize the colored main mode that shows;

The OC layer: the protection mixed structure also helps to improve simultaneously its flatness.

Introduce below and how to determine to help antireflective material layer, reflection horizon colorized optical filtering membrane area ratio:

At first, test does not contain the liquid crystal display transmittance (T-0) that helps film, reflectance coating, scattering film.Situations such as the driving circuit of this and target call, color filter film color are relevant, and are also relevant with liquid crystal industry Development of Materials progress.According to the brightness (L-01) and the backlight illumination (L-1) of target call, determine to use the mode that helps layer and reflection horizon colorized optical filtering membrane area than (K).Suppose that other conditions are constant, the LCD brightness that helps layer and do not help layer is defined as and helps a layer efficient (1＜n＜2), then than being n

L-01＝L-1*T-0*n/(K+1)-------------------------------(1)

K＝L-1*T-0*n/L-00-1-------------------------------(2)

Wherein, help layer efficient (n) and reflection horizon colorized optical filtering membrane area than (K) for can adjust option, in the test, the n value can increase near 2.By (2) formula as can be known, used and helped after the film, compared with the product that does not help film, reflection horizon colorized optical filtering membrane area can be increased to original more than 1.5～2 times than (K).Becoming the enhancing reflecting effect like this provides the foundation.

Introduce below and how to determine reflection horizon and color filter film overlapping area:

The color filter film that structure is the same with Fig. 1 is made as liquid crystal cell, the reflection case in zone 7 and zone 8 in the test pattern 1.Ambient light brightness is (L-2), and the reflectivity in zone 7 is (F-01), and the reflectivity in zone 8 is (F-02), and zone 7 and regional 8 areas ratio are (K1), object brightness (L-02), then

L-02＝L-2*(K+1)*(F-01*K1+F-02*(1-K1))/K -----(3)

K1＝((L-02*K)/(L-2*(K+1))-F-02)/(F-01-F-02)----(4)

Wherein, reflectivity F-01, F-02 and colored light filter membrane layer, reflection horizon, scattering layer situation are relevant, need adjust K1 value size according to different materials.Actual reflection horizon color filter film ratio K is between 0.5-2, and the LCD that can release new construction from (2) (4) has improved 20%～50% than common reflection efficiency

As seen, by adjusting the colour liquid crystal display device that n, K and K1 value just can obtain different transmissions, reflecting properties.Company can set up database in the actual application, and reference database just can be designed the display that meets demand during design.

Compare with prior art, semi-permeable colorful LCD of the present utility model when backlight lightening, can obtain bright-coloured picture display effect; Not lighting when backlight, can obtain colored preferably display effect, the area between colored degree and color filter film and the reflection horizon is than relevant; Can obtain the display effect of not dizzy eye in the sun, and the visual angle is broader than common product.

Description of drawings

Fig. 1 is the structural representation of general type semi-permeable colorful LCD;

Fig. 2 is the structural representation of the utility model preferred embodiment semi-permeable colorful LCD.

Embodiment

As shown in Figure 2, below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in further detail:

Semi-permeable colorful LCD in this preferred embodiment, from backlight toward outside light source direction, be followed successively by and help layer 13, following polaroid 1, glass substrate 2, reflectance coating 3, diffuse reflector 14, color filter film 4, OC layer 5, ITO layer 6, both alignment layers 7, pad material and liquid crystal 8, alignment film 9, ITO layer 10, glass substrate 11 and upper polarizer 12.

(1) effect of mixed structure major part

Help layer 5: i.e. reinforcing membrane, help the repeatedly utilization of light, improve brightness;

Reflectance coating 3: very high reflectivity, reflection of light reaches the colored effect that shows under the high light to external world;

Diffusive reflective film 6: high light can be avoided the effect of dizzy eye down, and can improve angular field of view;

Color filter film 4: realize the colored main mode that shows;

(2) determine to help antireflective material layer, reflection horizon colorized optical filtering membrane area ratio

L-01＝L-1*T-0*n/(K+1)-------------------------------(1)

K＝L-1*T-0*n/L-00-1-------------------------------(2)

Wherein, help layer efficient (n) and reflection horizon colorized optical filtering membrane area than (K) for can adjust option, in the test, the n value can increase near 2.By (2) formula as can be known, used and helped after the film, compared with the product that does not help film, reflection horizon colorized optical filtering membrane area can be increased to original more than 1.5～2 times than (K).Becoming the enhancing reflecting effect like this provides the foundation.(3) determine reflection horizon and color filter film overlapping area

The color filter film that structure is the same with Fig. 2 is made as liquid crystal cell, the reflection case in zone 15 and zone 16 in the test pattern 2.Ambient light brightness is (L-2), and the reflectivity in zone 15 is (F-01), and the reflectivity in zone 16 is (F-02), and zone 15 and regional 16 areas ratio are (K1), object brightness (L-02), then

L-02＝L-2*(K+1)*(F-01*K1+F-02*(1-K1))/K -----(3)

K1＝((L-02*K)/(L-2*(K+1))-F-02)/(F-01-F-02)----(4)

Wherein, reflectivity F-01, F-02 and colored light filter membrane layer, reflection horizon, scattering layer situation are relevant, need adjust K1 value size according to different materials.Actual reflection horizon color filter film ratio K is between 0.5-2, and the LCD that can release new construction from (2) (4) has improved 20%～50% than common reflection efficiency.

Above listed derivation formula is intended to clearly demonstrate design of the present utility model and technical scheme.

The above is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be all equivalents of being done according to claim scope of the present utility model, be the utility model claim scope and cover.

Claims

1. semi-permeable colorful LCD, it is characterized in that: from backlight toward outside light source direction, be followed successively by and help layer, down polaroid, glass substrate, reflectance coating, diffuse reflector, color filter film, OC layer, ITO layer, both alignment layers, pad material and liquid crystal, alignment film, ITO layer, glass substrate and upper polarizer, wherein color filter film, diffuse reflector, reflection horizon and help a layer composition mixed structure.

2. semi-permeable colorful LCD as claimed in claim 1, it is characterized in that: the described definite formula that helps antireflective material layer, reflection horizon colorized optical filtering membrane area ratio, T-0 is not for containing the liquid crystal display transmittance that helps film, reflectance coating, scattering film in the formula, L-01 is the brightness of target call, L-1 is the backlight illumination of target call, K is a reflection horizon colorized optical filtering membrane area ratio, suppose that other conditions are constant, help layer and do not help the LCD brightness ratio of layer to be n, it is 1＜n＜2 that definition helps layer efficient, and then formula is as follows:

L-01＝L-1*T-0*n/(K+1)

K＝L-1*T-0*n/L-00-1。

3. semi-permeable colorful LCD as claimed in claim 2, it is characterized in that: definite formula of described reflection horizon and color filter film overlapping area, wherein ambient light brightness is L-2, the reflectivity in zone (15) is F-01, the reflectivity in zone (16) is F-02, zone (15) and zone (16) area ratio are K1, object brightness L-02, and then formula is as follows:

L-02＝L-2*(K+1)*(F-01*K1+F-02*(1-K1))/K

K1＝((L-02*K)/(L-2*(K+1))-F-02)/(F-01-F-02)。