CN101738783A - Display equipment for improving white color offset and manufacturing method thereof - Google Patents

Abstract

The invention discloses display equipment and a manufacturing method thereof. The display equipment comprises a backlight module and a color resistor. The backlight module generates output light which has an emission spectrum function BL (lambda) corresponding to wavelength lambda. The color resistor is provided with a blue-light color resistor unit, a green-light color resistor unit, a red-light color resistor unit and a white-light color resistor unit which are respectively formed on the backlight module and filter output light generated by the backlight module, wherein, an index function S (lambda) is defined by the color resistor. The index function S (lambda) has an interval peak value when lambda ranges from 480nm to 580nm, and the interval peak value is between 1.1 and 1.2. The manufacturing method of the display equipment comprises the following steps: providing the backlight module to generate output light, selecting the blue-light color resistor unit, the green-light color resistor unit, the red-light color resistor unit and the white-light color resistor unit according to the index function S (lambda), combining the blue-light color resistor unit, the green-light color resistor unit, the red-light color resistor unit and the white-light color resistor unit to form the color resistor on the backlight module to filter the output light generated by the backlight module. The display equipment for implementing the invention and the manufacturing method thereof can reduce color offset.

Description

Improve the display device and the manufacture method thereof of white color offset

Technical field

The present invention relates to a kind of display device and manufacture method thereof, relate in particular to a kind of liquid crystal display and manufacture method thereof.

Background technology

Generally speaking, the colored filter of LCD use comprises substrate, separator, red color filter film, green color filter film and blue color filter film.In order to improve the chroma-luminance saturation degree to obtain preferable visual effect, the exploitation of the colored filter of polynary look has become one of trend.Wherein, gazed at most with the many first look technology of RGBW that can increase brightness and save the energy again.

One of emphasis of the many first look technological development of RGBW is to improve the penetrance that light passes display pannel, uses to reach the purpose of saving the energy.Yet white photoresistance is taking place through the phenomenon that has inclined to one side Huang after the high temperature manufacturing process, and the white point position that causes W white point position and RGB colour mixture has big difference and influences the conversion of signal.Particularly, convert in the algorithm of RGBW at RGB, the W signal extracts from rgb signal.If the white point position of W white point position and RGB colour mixture has big difference, just can cause the error in the computing, and then have influence on the input of signal and produce the colour cast problem.For head it off, the way of prior art mostly is aperture opening ratio that increases blue photoresistance and the aperture opening ratio that reduces white photoresistance, but this way can make whole penetrance descend.

Summary of the invention

Fundamental purpose of the present invention is to provide a kind of display device, can reduce the phenomenon of colour cast.

Another object of the present invention is to provide a kind of display apparatus manufacturing method, can reduce the phenomenon of colour cast.

Display device of the present invention comprises backlight module and look resistance.Backlight module produces output light, and output light has emission spectrum function BL (λ) with respect to wavelength X.Look resistance has blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit, is formed on the backlight module respectively and filters the output light that backlight module produces.With respect to wavelength X, blue light color resistance unit has blue light and penetrates frequency spectrum function B (λ), green light color resistance unit and have green glow and penetrate frequency spectrum function G (λ), red light color resistance unit and have that ruddiness penetrates frequency spectrum function R (λ), white color resistance unit has white light and penetrates frequency spectrum function W (λ).Wherein, look resistance definition has target function S (λ):

$S\left(\mathrm{\λ}\right)=\frac{R\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+G\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+B\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)}{W\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)},$ 380nm＜λ＜780nm。Target function S (λ) has interval peak value in wavelength X between time between 480nm to 580nm, and interval peak value is between 1.1 to 1.2.

Between between 380nm to 580nm the time, blue light penetrates frequency spectrum function B (λ) and has blue light local peaking penetrance in wavelength X.Between between 580nm to 780nm the time, ruddiness penetrates frequency spectrum function R (λ) and has ruddiness local peaking penetrance in wavelength X.Ruddiness local peaking penetrance is greater than blue light local peaking penetrance.Between between 480nm to 680nm the time, green glow penetrates frequency spectrum function G (λ) and has green glow local peaking penetrance in wavelength X.Green glow local peaking penetrance is greater than blue light local peaking penetrance.Blue light penetrates frequency spectrum function B (λ), green glow and penetrates frequency spectrum function G (λ), ruddiness and penetrate the functional value that frequency spectrum function R (λ) and white light penetrate frequency spectrum function W (λ) and represent with penetrance respectively.

Display apparatus manufacturing method of the present invention comprises the following step: provide backlight module to produce output light, wherein export light and have emission spectrum function BL (λ) with respect to wavelength X; Select blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit according to target function S (λ), wherein, with respect to wavelength X, blue light color resistance unit has blue light and penetrates frequency spectrum function B (λ), green light color resistance unit and have green glow and penetrate frequency spectrum function G (λ), red light color resistance unit and have that ruddiness penetrates frequency spectrum function R (λ), white color resistance unit has white light and penetrates frequency spectrum function W (λ);

$S\left(\mathrm{\λ}\right)=\frac{R\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+G\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+B\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)}{W\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)},$ 380nm＜λ＜780nm; And combination blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit be formed on the backlight module to form the look resistance, to filter the output light that backlight module produces.

Look resistance unit selection step comprises: make this target function S (λ) fall into 1.1 to 1.2 scope between the interval peak value that is had between 480nm to 580nm in wavelength X.Wherein in wavelength X between between 380nm to 580nm the time, blue light penetrates frequency spectrum function B (λ) and has blue light local peaking penetrance; Between between 580nm to 780nm the time, ruddiness penetrates frequency spectrum function R (λ) and has ruddiness local peaking penetrance in wavelength X; Look resistance unit selection step comprises: set ruddiness local peaking penetrance greater than blue light local peaking penetrance.Wherein in wavelength X between between 380nm to 580nm the time, blue light penetrates frequency spectrum function B (λ) and has blue light local peaking penetrance; Between between 480nm to 680nm the time, green glow penetrates frequency spectrum function G (λ) and has green glow local peaking penetrance in wavelength X; Wherein look resistance unit selection step comprises: set green glow local peaking penetrance greater than blue light local peaking penetrance.

Look resistance unit selection step comprises: determine red light color resistance unit and green light color resistance unit; And the proportioning of material, thickness or the central various material of change blue light color resistance unit is to adjust target function S (λ).

Implement display device of the present invention and manufacture method thereof, can reduce the phenomenon of colour cast.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:

Figure 1A penetrates spectrum diagram for preferred embodiment of the present invention;

Figure 1B is target function S (λ) synoptic diagram; And

Fig. 2 is a display apparatus manufacturing method preferred embodiment synoptic diagram of the present invention.

Drawing reference numeral:

100 white lights penetrate frequency spectrum

101 blue lights penetrate frequency spectrum

102 ruddiness penetrate frequency spectrum

103 green glows penetrate frequency spectrum

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the embodiment of the invention is described in further details below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.

Display device of the present invention comprises backlight module and look resistance.Backlight module produces output light, and output light has emission spectrum function BL (λ) with respect to wavelength X.Look resistance has blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit, is formed on the backlight module respectively and filters the output light that backlight module produces.With respect to wavelength X, blue light color resistance unit has blue light and penetrates frequency spectrum function B (λ), green light color resistance unit and have green glow and penetrate frequency spectrum function G (λ), red light color resistance unit and have that ruddiness penetrates frequency spectrum function R (λ), white color resistance unit has white light and penetrates frequency spectrum function W (λ).

Shown in Figure 1A, white light penetrates that frequency spectrum, blue light penetrate frequency spectrum, ruddiness penetrates frequency spectrum and green glow penetrates frequency spectrum respectively with 100,101,102 and 103 expressions.In preferred embodiment, between between 380nm to 580nm the time, blue light penetrates frequency spectrum function B (λ) and has blue light local peaking penetrance in wavelength X.Between between 580nm to 780nm the time, ruddiness penetrates frequency spectrum function R (λ) and has ruddiness local peaking penetrance in wavelength X.Between between 480nm to 680nm the time, green glow penetrates frequency spectrum function G (λ) and has green glow local peaking penetrance in wavelength X.Wherein, ruddiness local peaking penetrance is greater than blue light local peaking penetrance.Green glow local peaking penetrance is greater than blue light local peaking penetrance.In preferred embodiment, blue light penetrates frequency spectrum function B (λ), green glow and penetrates frequency spectrum function G (λ), ruddiness and penetrate the functional value that frequency spectrum function R (λ) and white light penetrate frequency spectrum function W (λ) and represent with penetrance respectively.Yet in different embodiment, blue light penetrates frequency spectrum function B (λ), green glow and penetrates frequency spectrum function G (λ), ruddiness and penetrate the functional value that frequency spectrum function R (λ) and white light penetrate frequency spectrum function W (λ) and can also represent by other optical characteristics measuring values.

Look resistance definition has target function S (λ):

$S\left(\mathrm{\λ}\right)=\frac{R\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+G\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+B\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)}{W\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)},$ 380nm＜λ＜780nm。Target function S (λ) has interval peak value in wavelength X between time between 480nm to 580nm, and interval peak value is between 1.1 to 1.2.Particularly, shown in Figure 1B, meet These parameters function S (λ) and have interval peak value and of the present invention display device of interval peak value between 1.1 to 1.2 between time between 480nm to 580nm, have preferable white point position, that is colour cast is less in wavelength X.

The less effect of colour cast of the present invention can further specify by following four different embodiment.

Embodiment one:

Embodiment two:

Embodiment three:

Embodiment four:

Δ u ' v ' is the colour cast exponential number, and (2x+12y+3), (2x+12y+3), particularly, be the two-dimentional air line distance of RGB-W and W, the more little expression colour cast of this numerical value is few more for v '=9y/ for u '=4x/.From above-mentioned one to four embodiment form as can be seen, when interval peak value greater than 1.2 the time, Δ u ' v '＞0.3, when interval peak value between 1.1 between 1.2 the time, Δ u ' v '＜0.3.Therefore can learn, when interval peak value between 1.1 between 1.2 the time, display device colour cast of the present invention is less, has preferable white point position.

As shown in Figure 2, display apparatus manufacturing method of the present invention comprises the following step:

Step 1001 provides backlight module to produce output light, wherein exports light and has emission spectrum function BL (λ) with respect to wavelength X.

Step 1003, select blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit according to target function S (λ), wherein, with respect to wavelength X, blue light color resistance unit has blue light and penetrates frequency spectrum function B (λ), green light color resistance unit and have green glow and penetrate frequency spectrum function G (λ), red light color resistance unit and have that ruddiness penetrates frequency spectrum function R (λ), white color resistance unit has white light and penetrates frequency spectrum function W (λ);

$S\left(\mathrm{\λ}\right)=\frac{R\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+G\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+B\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)}{W\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)},$ 380nm＜λ＜780nm。

Step 1005, combination blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit are formed on the backlight module to form the look resistance, to filter the output light that backlight module produces.

In preferred embodiment, step 1003 comprises makes target function S (λ) fall into 1.1 to 1.2 scope between the interval peak value that is had between 480nm to 580nm in wavelength X.Particularly, can determine red light color resistance unit and green light color resistance unit, the proportioning of material, thickness or the central various material of change blue light color resistance unit is to adjust target function S (λ).For example, in preferred embodiment, blue light color resistance unit can use that to comprise blue and purple ratio be the materials such as look resistance that 15: 6 No. 23 looks resistances of look resistance, purple or blue and purple ratio are 9: 1, makes target function S (λ) fall into 1.1 to 1.2 scope between the interval peak value that is had between 480nm to 580nm in wavelength X.

In different embodiment, between between 380nm to 580nm the time, blue light penetrates frequency spectrum function B (λ) and has blue light local peaking penetrance in wavelength X; Between between 580nm to 780nm the time, ruddiness penetrates frequency spectrum function R (λ) and has ruddiness local peaking penetrance in wavelength X; Step 1003 comprises: set ruddiness local peaking penetrance greater than blue light local peaking penetrance.

In different embodiment, between between 380nm to 580nm the time, blue light penetrates frequency spectrum function B (λ) and has blue light local peaking penetrance in wavelength X; Between between 480nm to 680nm the time, green glow penetrates frequency spectrum function G (λ) and has green glow local peaking penetrance in wavelength X; Step 1003 comprises: set green glow local peaking penetrance greater than blue light local peaking penetrance.

Though aforesaid description and accompanying drawing have disclosed preferred embodiment of the present invention, must recognize variously increase, many modifications and replace and may be used in preferred embodiment of the present invention, and can not break away from the spirit and the scope of the principle of the invention that the claim scope defined.The general skill person who is familiar with the technical field of the invention can know from experience, and the present invention can be used in the modification of many forms, structure, layout, ratio, material, element and assembly.Therefore, this paper should be regarded as in order to explanation the present invention at the embodiment that this disclosed, but not in order to restriction the present invention.Scope of the present invention should be defined by the claim scope, and contains its legal equivalents, is not limited to previous description.

Claims (11)

1. a display device is characterized in that, described display device comprises:

One backlight module produces an output light, and described output light has an emission spectrum function BL (λ) with respect to wavelength X; And

Resistance of the same colour has blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit, is formed on the described backlight module respectively and filters the described output light that described backlight module produces; Wherein, with respect to wavelength X, described blue light color resistance unit has a blue light and penetrates frequency spectrum function B (λ), described green light color resistance unit and have a green glow and penetrate frequency spectrum function G (λ), described red light color resistance unit and have that a ruddiness penetrates frequency spectrum function R (λ), described white color resistance unit has a white light and penetrates frequency spectrum function W (λ);

Wherein, described look resistance definition has a target function S (λ):

$S\left(\mathrm{\λ}\right)=\frac{R\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+G\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+B\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)}{W\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)},$ 380nm＜λ＜780nm；

Target function S (λ) has an interval peak value in wavelength X between time between 480nm to 580nm, and described interval peak value is between 1.1 to 1.2.

2. display device as claimed in claim 1 is characterized in that, between between 380nm to 580nm the time, described blue light penetrates frequency spectrum function B (λ) and has a blue light local peaking penetrance in wavelength X; Between between 580nm to 780nm the time, described ruddiness penetrates frequency spectrum function R (λ) and has a ruddiness local peaking penetrance in wavelength X; Described ruddiness local peaking penetrance is greater than described blue light local peaking penetrance.

3. display device as claimed in claim 1 is characterized in that, between between 380nm to 580nm the time, described blue light penetrates frequency spectrum function B (λ) and has a blue light local peaking penetrance in wavelength X; Between between 480nm to 680nm the time, described green glow penetrates frequency spectrum function G (λ) and has a green glow local peaking penetrance in wavelength X; Described green glow local peaking penetrance is greater than described blue light local peaking penetrance.

4. display device as claimed in claim 1, it is characterized in that described blue light penetrates frequency spectrum function B (λ), described green glow and penetrates frequency spectrum function G (λ), described ruddiness and penetrate the functional value that frequency spectrum function R (λ) and described white light penetrate frequency spectrum function W (λ) and represent with penetrance respectively.

5. a display apparatus manufacturing method is characterized in that, described display apparatus manufacturing method comprises the following step:

Provide a backlight module to produce an output light, wherein said output light has an emission spectrum function BL (λ) with respect to wavelength X;

Select blue light color resistance unit, green light color resistance unit, red light color resistance unit and white color resistance unit according to a target function S (λ); Wherein, with respect to wavelength X, described blue light color resistance unit has a blue light and penetrates frequency spectrum function B (λ), described green light color resistance unit and have a green glow and penetrate frequency spectrum function G (λ), described red light color resistance unit and have that a ruddiness penetrates frequency spectrum function R (λ), described white color resistance unit has a white light and penetrates frequency spectrum function W (λ);

$S\left(\mathrm{\λ}\right)=\frac{R\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+G\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)+B\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)}{W\left(\mathrm{\λ}\right)*\mathrm{BL}\left(\mathrm{\λ}\right)},$ 380nm＜λ＜780nm；

Make up described blue light color resistance unit, described green light color resistance unit, described red light color resistance unit and described white color resistance unit and be formed on the described backlight module, to filter the output light that described backlight module produces to form resistance of the same colour.

6. manufacture method as claimed in claim 5 is characterized in that, described look resistance unit selection step comprises: make described target function S (λ) fall into 1.1 to 1.2 scope between an interval peak value that is had between 480nm to 580nm in wavelength X.

7. manufacture method as claimed in claim 5 is characterized in that, between between 380nm to 580nm the time, described blue light penetrates frequency spectrum function B (λ) and has a blue light local peaking penetrance in wavelength X; Between between 580nm to 780nm the time, described ruddiness penetrates frequency spectrum function R (λ) and has a ruddiness local peaking penetrance in wavelength X; Described look resistance unit selection step comprises: set described ruddiness local peaking penetrance greater than described blue light local peaking penetrance.

8. manufacture method as claimed in claim 5 is characterized in that, between between 380nm to 580nm the time, described blue light penetrates frequency spectrum function B (λ) and has a blue light local peaking penetrance in wavelength X; Between between 480nm to 680nm the time, described green glow penetrates frequency spectrum function G (λ) and has a green glow local peaking penetrance in wavelength X; Wherein said look resistance unit selection step comprises: set described green glow local peaking penetrance greater than described blue light local peaking penetrance.

9. manufacture method as claimed in claim 5 is characterized in that, described look resistance unit selection step comprises:

Determine described red light color resistance unit and described green light color resistance unit; And

The material that changes described blue light color resistance unit is to adjust described target function S (λ).

10. manufacture method as claimed in claim 5 is characterized in that, described look resistance unit selection step comprises:

Determine described red light color resistance unit and described green light color resistance unit; And

The thickness that changes described blue light color resistance unit is to adjust described target function S (λ).

11. manufacture method as claimed in claim 5 is characterized in that, described look resistance unit selection step comprises:

Determine described red light color resistance unit and described green light color resistance unit; And

The proportioning that changes various material in the described blue light color resistance unit is to adjust described target function S (λ).

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