CN1493903A - Method of determining ratio of coloured liquid crystal screen reflectivity and transmisivity from reflecting film opening - Google Patents

Method of determining ratio of coloured liquid crystal screen reflectivity and transmisivity from reflecting film opening Download PDF

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Publication number
CN1493903A
CN1493903A CNA031468616A CN03146861A CN1493903A CN 1493903 A CN1493903 A CN 1493903A CN A031468616 A CNA031468616 A CN A031468616A CN 03146861 A CN03146861 A CN 03146861A CN 1493903 A CN1493903 A CN 1493903A
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China
Prior art keywords
lcd screen
reflectivity
color lcd
reflectance coating
transmitance
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CNA031468616A
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CN1325973C (en
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陈向阳
李铁
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Truly Semiconductors Ltd
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Truly Semiconductors Ltd
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Priority to CNB031468616A priority Critical patent/CN1325973C/en
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Abstract

A method for using the opening percentage of reflecting film to determine the ratio of reflectivity to transmissivity of color LC screen includes choosing the material for reflecting film, planting it on the substrate of color LC screen, measuring its reflectivity, determining the relationship between the opening percentage of reflecting film and the ratio of the reflectivity to transmissivity of color LC screen, calculating the opening percentage, and making openings on the reflecting film. Its advantage is low cost.

Description

Method by reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio
Technical field
The present invention relates to color LCD screen, relate in particular to the reflectance coating of semi-transparency type color LCD screen.
Background technology
Prior art relates to the semi-transparency type color LCD screen, when also being the reflectance coating of semi-transparency type color liquid crystal panel type display, determining the reflectivity of display and the ratio of transmitance, generally is by selecting for use different reflective film materials to realize, this method is difficult to control in design with when producing.
Summary of the invention
The technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part, and proposes a kind of method that need not select the ratio control of reflectivity that different reflective film materials realizes display and transmitance for use.
The technical scheme that the present invention solves the problems of the technologies described above employing is, a kind of method by reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio is proposed, the adjacent setting of reflectance coating and color filter has opening on this color LCD screen on the transmitting film, comprises step:
1.. choose a kind of reflective film material of suitable production;
2.. the substrate at color LCD screen plates selected reflective film material;
3.. measure the reflectivity R0 of described reflective film material;
4.. to a display element unit, definition:
The reflectivity R of color LCD screen, the reflectivity R of itself and color filter film glass substrate 1Relevant, have: R=R 1* M 1, M wherein 1Being the influence coefficient of the structure of colour liquid crystal display device to the color LCD screen reflectivity, is a constant; The transmitance T of color LCD screen, the transmitance T of itself and color filter film glass base openings part 1And the aperture opening ratio Δ S of reflectance coating is relevant, has: T=T 1* Δ S * M 2, the area S of the area S0 ÷ display element unit of Δ S=opening wherein, and M 2Being the influence coefficient of the structure of color LCD screen to the color LCD screen transmissivity, is a constant; Thereby, when described reflectance coating below the color filter film, and hidden by the color filter film fully, then:
R=R 0* T 1 2* (1-Δ S) * M 1, T=T 1* Δ S * M 2Can derive:
ΔS = R 0 × M 1 × T 1 ( R / T ) × M 2 + R 0 × M 1 × T 1
When described reflectance coating on the color filter film, and the transmitance of insulation course and transparent conductive film is T 2, then:
R=R 0* T 2* (1-Δ S) * M 1, T=T 1* Δ S * M 2Can derive:
ΔS = R 0 × T 2 × M 1 ( R / T ) × M 2 × T 1 + R 0 × T 2 × M 1
Because R 0, T 1, T 2, M 1And M 2Be known constant, this two equation has just been determined the relation between reflectance coating aperture opening ratio Δ S and color LCD screen reflectivity and the transmitance ratio R/T;
5.. according to the color LCD screen reflectivity and the transmitance R/T of designing requirement defined, calculate Δ S by described relational expression;
6.. according to the Δ S that calculates the reflectance coating that is plated on the glass substrate is carried out opening, and the shape of opening can be common any geometric figure.
Compare with prior art, use the open design method of colour liquid crystal display device reflectance coating of the present invention, need not select different reflective film materials for use, as long as openings of sizes is designed, can realize the reflectivity of display and the ratio control of transmitance, can shorten the construction cycle greatly and reduce production costs.
Description of drawings
Fig. 1 is the structural representation of reflectance coating upper shed in the inventive method.
Fig. 2 is the color LCD screen structural representation of the inventive method embodiment 1.
Fig. 3 is the color LCD screen structural representation of the inventive method embodiment 2.
Fig. 4 is the color LCD screen structural representation of the inventive method embodiment 3.
Embodiment
Below in conjunction with accompanying drawing most preferred embodiment of the present invention is described in further detail.
Embodiment one:
As shown in Figure 2, the structure of described colour liquid crystal display device comprises from top to bottom: go up polaroid 10, glass substrate 20, transparent conductive film 30, liquid crystal 40, transparent conductive film 50, insulation course 60, color filter film 70, reflectance coating 80, glass substrate 90 and last polaroid 100.With packaging plastic 110 sealings, have BM (black matrix") 130,70 described reflectance coatings 80 that opening 120 is arranged around the described color filter film around the described liquid crystal 40, and described reflectance coating 80 is hidden fully by color filter film 70.
This structure is modal a kind of in the semi-transparency type colour liquid crystal display device.For this structure, the present invention comprises step by the method for reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio:
1.. choose alumel as producing the reflectance coating material;
2.. at the substrate plated aluminum nickel alloy of color LCD screen;
3.. record the reflectivity R of alumel 0Be 92% ± 2%;
4.. to a display element unit 150 as shown in fig. 1, opening 120 is arranged on it, definition:
The reflectivity R of color LCD screen, the reflectivity R of itself and color filter film glass substrate 1Relevant, have: R=R 1* M 1, M wherein 1Being the influence coefficient of the structure of colour liquid crystal display device to the color LCD screen reflectivity, is a constant, is measured as 50% ± 10% through experiment;
The transmitance T of color LCD screen, the transmitance T of itself and color filter film glass base openings part 1And the aperture opening ratio Δ S of reflectance coating is relevant, has: T=T 1* Δ S * M 2, the area S of the area S0 ÷ display element unit of Δ S=opening wherein, and M 2Being the influence coefficient of the structure of color LCD screen to the color LCD screen transmissivity, is a constant, is measured as 15% ± 3% through experiment, transmitance T 1Be a constant also, be measured as 27% ± 3% through experiment;
Thereby, by: R=R 0* T 1 2* ( 1-Δ S) * M 1, T=T 1* Δ S * M 2Can derive:
ΔS = R 0 × M 1 × T 1 ( R / T ) × M 2 + R 0 × M 1 × T 1
Because R 0, T 1, M 1And M 2Be known constant, this equation has just been determined the relation between reflectance coating aperture opening ratio Δ S and color LCD screen reflectivity and the transmitance ratio R/T;
5.. color LCD screen reflectivity and transmitance R/T according to the designing requirement defined calculate Δ S by described relational expression;
6.. according to the Δ S that calculates the reflectance coating that is plated on the glass substrate is carried out opening, and the shape of opening can be common any geometric figure.
Openings of sizes is designed, can realize the reflectivity of display and the ratio control of transmitance:
Aperture opening ratio is 10%～30%: high reflectance, low transmission;
Aperture opening ratio is 30%～60%: middle isoreflectance, medium transmitance;
Aperture opening ratio is 60%～90%: antiradar reflectivity, high permeability.
As seen, for this structure colour liquid crystal display device, adopt described open design method, need not select different reflective film materials for use, as long as openings of sizes is designed, can realize the reflectivity of display and the ratio control of transmitance, can reduce development difficulty and production cost greatly.
Embodiment two:
As shown in Figure 3, the structure of described colour liquid crystal display device comprises from top to bottom: go up polaroid 10, glass substrate 20, transparent conductive film 30, liquid crystal 40, transparent conductive film 50, insulation course 60, reflectance coating 80, color filter film 70, glass substrate 90 and last polaroid 100.With packaging plastic 110 sealings, around the described color filter film BM130 is arranged around the described liquid crystal 40, described reflectance coating 80 has opening 120, and described reflectance coating 80 is in color filter film 70 tops.
The characteristics of this structure colour liquid crystal display device are when backlight lightening, can realize colored the demonstration, and backlight when not lighting, and realize white and black displays.For this structure, the present invention comprises step by the method for reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio:
1.. choose alumel as producing the reflectance coating material;
2.. at the substrate plated aluminum nickel alloy of color LCD screen;
3.. record the reflectivity R of alumel 0Be 92% ± 2%;
4.. to a display element unit 150 as shown in Figure 1, opening 120 is arranged on it, definition:
The reflectivity R of color LCD screen, the reflectivity R of itself and color filter film glass substrate 1Relevant, have: R=R 1* M 1, M wherein 1Be the influence coefficient of the structure of colour liquid crystal display device, be T the color LCD screen reflectivity 1One constant is measured as 50% ± 10% through experiment;
The transmitance T of color LCD screen, the transmitance T of itself and color filter film glass base openings part 1And the aperture opening ratio Δ S of reflectance coating is relevant, has: T=T 1* Δ S * M 2, the area S of the area S0 ÷ display element unit of Δ S=opening wherein, and M 2Being the influence coefficient of the structure of color LCD screen to the color LCD screen transmissivity, is that a constant is measured as 15% ± 3% through experiment, transmitance T 1Be a constant also, be measured as 27% ± 3% through experiment;
The transmitance of insulation course and transparent conductive film is T 2Be a constant, be measured as 82% ± 5% through experiment; Thereby:
By R=R 0* T 2* (1-Δ S) * M 1, T=T 1* Δ S * M 2Can derive:
ΔS = R 0 × T 2 × M 1 ( R / T ) × M 2 × T 1 + R 0 × T 2 × M 1
Because R 0, T 1, T 2, M 1And M 2Be known constant, this equation has just been determined the relation between reflectance coating aperture opening ratio Δ S and color LCD screen reflectivity and the transmitance ratio R/T.
5.. color LCD screen reflectivity and transmitance R/T according to the designing requirement defined calculate Δ S by described relational expression;
6.. according to the Δ S that calculates the reflectance coating that is plated on the glass substrate is carried out opening, and the shape of opening can be common any geometric figure.
Openings of sizes is designed, and can realize the reflectivity of display and the ratio control of transmitance: common aperture opening ratio all will if improve transmitance, can increase the reflectance coating aperture opening ratio more than 20%.
As seen, for this structure colour liquid crystal display device, adopt described open design method, need not select different reflective film materials for use, as long as openings of sizes is designed, can realize the reflectivity of display and the ratio control of transmitance, can reduce development difficulty and production cost greatly.
Embodiment three:
As shown in Figure 4, the structure of described colour liquid crystal display device comprises from top to bottom: go up polaroid 10, glass substrate 20, transparent conductive film 30, liquid crystal 40, transparent conductive film 50, insulation course 60, color filter film 70, reflectance coating 80, glass substrate 90 and last polaroid 100.Seal with packaging plastic 110 around the described liquid crystal 40, BM130 is arranged around the described color filter film, described reflectance coating 80 has opening 120, and described reflectance coating 80 is hidden by color filter film 70 fully, and between the red, green, blue three primary colours black matrix" lines is arranged in the described color filter film 70.
The characteristics of this structure colour liquid crystal display device are the colour mixtures that can prevent between the red, green, blue three primary colours, at reflex time good contrast and color are arranged.For this structure, the present invention is by the method for reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio, and the step that comprises is identical with embodiment one.
Openings of sizes is designed, can realize the reflectivity of display and the ratio control of transmitance:
Aperture opening ratio is 10%～30%: high reflectance, low transmission;
Aperture opening ratio is 30%～60%: middle isoreflectance, medium transmitance;
Aperture opening ratio is 60%～90%: antiradar reflectivity, high permeability.
As seen, for this structure colour liquid crystal display device, adopt described open design method, need not select different reflective film materials for use, as long as openings of sizes is designed, can realize the reflectivity of display and the ratio control of transmitance, can reduce development difficulty and production cost greatly.
More than the colour liquid crystal display device of each embodiment realize, comprise the steps:
1. select a kind of starting material of reflectance coating of suitable production, as: alumel.
2. Gu Ding technological requirement plates reflective film material at glass substrate, and measures the reflectivity and the transmitance of this material.
3. the difference according to product requires to calculate rational opening shape and size.
4. carry out the reflectance coating production design and the processing of touching tool.
As seen, the colour liquid crystal display device of different performance, need only carry out the design and the production of the 3rd, 4 two step wherein, this just can reduce in the prior art each time all must the selection and the performance measurement process of reflective film material, thereby greatly reduce design difficulty and production cost.
More than listed each preferred embodiment be intended to clearly demonstrate design of the present invention and technical scheme.The present invention's enforcement is not limited to the various embodiments described above.Any based on design of the present invention and technical scheme, and need not creative work, the simple deduction or replace carried out, perhaps this invention is applied to other colour liquid crystal display device structure situation, all belong to the present invention's enforcement.

Claims (4)

1, a kind of method by reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio, the adjacent setting of reflectance coating and color filter on this color LCD screen, described reflectance coating is below the color filter film, and hidden by the color filter film fully, opening is arranged on the reflectance coating, it is characterized in that, comprise step:
1.. choose a kind of reflective film material of suitable production;
2.. the substrate at color LCD screen plates selected reflective film material;
3.. measure the reflectivity R of described reflective film material 0
4.. to a display element unit, definition:
The reflectivity R of color LCD screen, the reflectivity R of itself and color filter film glass substrate 1Relevant, have: R=R 1* M 1, M wherein 1Being the influence coefficient of the structure of colour liquid crystal display device to the color LCD screen reflectivity, is a constant;
The transmitance T of color LCD screen, the transmitance T of itself and color filter film glass base openings part 1And the aperture opening ratio Δ S of reflectance coating is relevant, has: T=T 1* Δ S * M 2, the area S of the area S0 ÷ display element unit of Δ S=opening wherein, and M 2Being the influence coefficient of the structure of color LCD screen to the color LCD screen transmissivity, is a constant;
By: R=R 0* T 1 2* (1-Δ S) * M 1, T=T 1* Δ S * M 2Can derive:
ΔS = R 0 × M 1 × T 1 ( R / T ) × M 2 + R 0 × M 1 × T 1
R wherein 0, T 1, M 1And M 2Be known constant, this equation has just been determined the relation between reflectance coating aperture opening ratio Δ S and color LCD screen reflectivity and the transmitance ratio R/T;
5.. according to the color LCD screen reflectivity and the transmitance R/T of designing requirement defined, calculate Δ S by described relational expression;
6.. according to the Δ S that calculates the reflectance coating that is plated on the glass substrate is carried out opening, and the shape of opening can be common any geometric figure.
2, a kind of method by reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio, the adjacent setting of reflectance coating and color filter on this color LCD screen, described reflectance coating has opening on the reflectance coating on the color filter film, it is characterized in that, comprise step:
1.. choose a kind of reflective film material of suitable production;
2.. the substrate at color LCD screen plates selected reflective film material;
3.. measure the reflectivity R of described reflective film material 0
4.. to a display element unit, definition:
The reflectivity R of color LCD screen, the reflectivity R of itself and color filter film glass substrate 1Relevant, have: R=R 1* M 1, M wherein 1Being the influence coefficient of the structure of colour liquid crystal display device to the color LCD screen reflectivity, is a constant;
The transmitance T of color LCD screen, the transmitance T of itself and color filter film glass base openings part 1And the aperture opening ratio Δ S of reflectance coating is relevant, has: T=T 1* Δ S * M 2, the area S of the area S0 ÷ display element unit of Δ S=opening wherein, and M 2Being the influence coefficient of the structure of color LCD screen to the color LCD screen transmissivity, is a constant; The transmitance of insulation course and transparent conductive film is T 2
By: R=R 0* T 2* (1-Δ S) * M 1, T=T 1* Δ S * M 2Can derive:
ΔS = R 0 × T 2 × M 1 ( R / T ) × M 2 × T 1 + R 0 × T 2 × M 1
R wherein 0, T 1, T 2, M 1And M 2Be known constant, this equation has just been determined the relation between reflectance coating aperture opening ratio Δ S and color LCD screen reflectivity and the transmitance ratio R/T.
5.. according to the color LCD screen reflectivity and the transmitance R/T of designing requirement defined, calculate Δ S by described relational expression;
6.. according to the Δ S that calculates the reflectance coating that is plated on the glass substrate is carried out opening, and the shape of opening can be common any geometric figure.
3, the method by reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio as claimed in claim 2, it is characterized in that: described aperture opening ratio is not less than 20%.
4, the method by reflectance coating opening calibration color LCD screen reflectivity and transmitance ratio as claimed in claim 1 is characterized in that: to prevent the black matrix" isolation of colour mixture between red, green and blue three looks useful in the described color filter film.
CNB031468616A 2003-09-15 2003-09-15 Method of determining ratio of coloured liquid crystal screen reflectivity and transmisivity from reflecting film opening Expired - Fee Related CN1325973C (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100442118C (en) * 2006-09-30 2008-12-10 信利半导体有限公司 Semi-transmission type liquid crystal display device and method for making the same
CN108490519A (en) * 2018-03-23 2018-09-04 京东方科技集团股份有限公司 A kind of coating designs method and transparent substrate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4189086B2 (en) * 1999-06-30 2008-12-03 株式会社東芝 Density filter
JP2001255520A (en) * 2000-03-10 2001-09-21 Fuji Photo Film Co Ltd Color liquid crystal display element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100442118C (en) * 2006-09-30 2008-12-10 信利半导体有限公司 Semi-transmission type liquid crystal display device and method for making the same
CN108490519A (en) * 2018-03-23 2018-09-04 京东方科技集团股份有限公司 A kind of coating designs method and transparent substrate

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