TWI470282B - Color filter and display - Google Patents

Description

Color filter and display

This invention relates to an optoelectronic device and components thereof, and more particularly to a display device and its filter elements.

With the advancement of display technology, people can make life more convenient by the aid of the display. In order to make the display light and thin, the flat panel display (FPD) has become the mainstream. Among many flat panel displays, liquid crystal displays (LCDs) have superior characteristics such as high space utilization efficiency, low power consumption, no radiation, and low electromagnetic interference. Therefore, liquid crystal displays are popular among consumers.

Since the light-emitting diode has the advantages of power saving, environmental protection, small size, long life, and fast response speed, the light-emitting diode has gradually become the main backlight used for the liquid crystal display. The white light emitting diode is used to provide a backlight to the display panel, and the light emitted by the white light emitting diode penetrates the active device array substrate, the display medium layer and the color filter in the display panel, so that the liquid crystal display can be displayed. Picture. Therefore, the optical properties such as brightness and chromaticity of the white light emitting diode affect the overall color performance of the liquid crystal display. However, the light emitted by the white light emitting diode is white light composed of color light of different wavelengths, and the transmittance of the color light of different wavelengths is different from that of the color filter in the display panel.

In addition, even if white light-emitting diodes are fabricated under the same process conditions, the light emitted by different white light-emitting diodes may still have different optical characteristics or even great differences. As a result, these optically The difference will be directly reflected on the liquid crystal display, and the liquid crystal display of the same specification will display different display effects, thereby reducing the quality of the liquid crystal display.

On the other hand, in order to make different types of liquid crystal displays (such as LCD TV LCDs, LCD screens, etc.) adapt to the needs and needs of different user groups, designers need to improve various types of liquid crystals for these needs. The optical properties of the display.

The present invention relates to a color filter that compensates for differences in optical characteristics of different light sources when light from different sources penetrates the color filter.

The invention further relates to a display that uses the color filter described above to compensate for differences in optical characteristics of the backlight, thereby providing better display quality.

The color filter of the present invention can adjust the light transmittance according to requirements, and thus can be applied to various types of displays with high compatibility.

To specifically describe the present invention, a color filter is provided herein that includes a substrate, a plurality of color filter units, and a transmittance adjustment stack. The color filter unit is disposed on the substrate. The transmittance adjustment stack is disposed on the substrate and covers the color filter unit. The transmittance adjusting laminate comprises a transparent conductive layer and an inorganic dielectric layer, wherein the inorganic dielectric layer is made of fluoride, inorganic oxide, inorganic nitride or inorganic nitrogen oxide.

To specifically describe the content of the present invention, a display is further provided, which includes a display panel and a backlight module, wherein the display panel includes a A color filter, an active device array substrate, and a display medium layer. In addition, the color filter includes a substrate, a plurality of color filter units, and a transmittance adjustment stack. The color filter unit is disposed on the substrate. The transmittance adjustment stack is disposed on the substrate and covers the color filter unit. The transmittance adjusting laminate comprises a transparent conductive layer and an inorganic dielectric layer, wherein the inorganic dielectric layer is made of fluoride, inorganic oxide, inorganic nitride or inorganic nitrogen oxide. The display medium layer is disposed between the color filter and the active device array substrate. The backlight module is disposed beside the display panel to provide a backlight to the display panel.

According to an embodiment of the invention, the color filter and the inorganic dielectric layer of the display are located between the transparent conductive layer and the substrate.

According to an embodiment of the invention, the color filter and the inorganic dielectric layer of the display are made of fluoride, cerium oxide, cerium nitride or cerium oxynitride.

To specifically describe the present invention, another color filter is provided herein that includes a substrate, a plurality of color filter units, at least one transmittance adjustment stack, and a second transparent conductive layer. The color filter unit is disposed on the substrate. The transmittance adjustment stack is disposed on the substrate and covers the color filter unit. Each of the transmittance adjusting laminates includes a first transparent conductive layer and an inorganic dielectric layer. The second transparent conductive layer is disposed between the at least one transmittance adjusting stack and the substrate.

To specifically describe the content of the present invention, another display is provided, which includes a display panel and a backlight module, wherein the display panel includes a color filter, an active device array substrate, and a display medium layer. In addition, the color filter includes a substrate, a plurality of color filter units, and at least one The transmittance adjusting laminate and a second transparent conductive layer. The color filter unit is disposed on the substrate. The transmittance adjusting stack is disposed on the substrate and covers the color filter unit, wherein each of the transmittance adjusting layers comprises a first transparent conductive layer and an inorganic dielectric layer. The second transparent conductive layer is disposed between the at least one transmittance adjusting stack and the substrate. The display medium layer is disposed between the color filter and the active device array substrate. The backlight module is disposed beside the display panel to provide a backlight to the display panel.

According to an embodiment of the invention, the other color filter and the inorganic dielectric layer of the display are located between the first transparent conductive layer and the substrate.

According to an embodiment of the present invention, the material of the other color filter and the inorganic dielectric layer of the display is fluoride, inorganic oxide, inorganic nitride or inorganic nitrogen oxide. More specifically, the material of the inorganic dielectric layer is, for example, magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride.

To specifically describe the present invention, yet another color filter is provided herein that includes a substrate, a plurality of color filter units, and at least two transmittance adjustment stacks. The color filter unit is disposed on the substrate. The transmittance adjusting laminates are disposed on the substrate in a stacked manner and cover the color filter unit. Each of the transmittance adjusting laminates includes a transparent conductive layer and an inorganic dielectric layer.

In order to specifically describe the content of the present invention, another display device includes a display panel and a backlight module. The display panel includes a color filter, an active device array substrate, and a display medium layer. Further, the color filter includes a substrate, a plurality of color filter units, and at least two transmittance adjustment stacks. The color filter unit is disposed on the substrate. penetrate The rate adjustment stacks are stacked on the substrate and overlap the color filter unit, wherein each of the transmittance adjustment stacks comprises a transparent conductive layer and an inorganic dielectric layer. The display medium layer is disposed between the color filter and the active device array substrate. The backlight module is disposed beside the display panel to provide a backlight to the display panel.

According to an embodiment of the invention, the foregoing color filter and the inorganic dielectric layer of the display are located between the transparent conductive layer and the substrate.

According to an embodiment of the invention, the material of the inorganic filter layer of the color filter and the display is fluoride, inorganic oxide, inorganic nitride or inorganic nitrogen oxide. More specifically, the material of the inorganic dielectric layer is, for example, magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride.

According to an embodiment of the invention, the refractive index of the inorganic color layer of the various color filters and the display is substantially smaller than the refractive index of the transparent conductive layer, the first transparent conductive layer or the second transparent conductive layer.

According to an embodiment of the invention, the refractive indices of the various color filters and the inorganic dielectric layer of the display are substantially between 1 and 2.4.

According to an embodiment of the invention, the thickness of the inorganic dielectric layer of the various color filters and displays described above is substantially between 20 nm and 160 nm.

According to an embodiment of the invention, the transparent conductive layer, the first transparent conductive layer or the second transparent conductive layer of the various color filters and the display are made of Indium Tin Oxide (ITO).

According to an embodiment of the invention, the refractive indices of the various color filters and the transparent conductive layer, the first transparent conductive layer or the second transparent conductive layer of the display are substantially between 1.8 and 2.6.

According to an embodiment of the invention, the thickness of the transparent conductive layer, the first transparent conductive layer or the second transparent conductive layer of the various color filters and the display is substantially between 40 nm and 150 nm.

The color filter of the present invention is provided with one or more transmittance adjusting laminates composed of a transparent conductive layer and an inorganic dielectric layer, wherein the thickness and combination of the transparent conductive layer or the inorganic dielectric layer can be moderately changed. In order to adjust the difference of the transmittance of various wavelengths with respect to the color filter, the screen displayed by the display has better brightness. In addition, the color filter of the present invention can adjust the light transmittance according to actual application requirements, and thus can be applied to various types of displays with high compatibility.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

[First Embodiment]

1A is a schematic cross-sectional view showing a color filter of a first embodiment of the present invention. Referring to FIG. 1A , the color filter 110 of the present embodiment includes a substrate 112 , a plurality of color filter units 114 , a transmittance adjustment stack 116 , and a second transparent conductive layer 118 . The color filter unit 114 is disposed on the substrate 112. The color filter unit 114 is composed of, for example, a red filter unit 114R, a green filter unit 114G, and a blue filter unit 114B. The transmittance adjusting stack 116 is disposed on the substrate 112 and covers the color filter unit 114. The transmittance adjusting laminate 116 includes a first transparent conductive layer 116a and an inorganic dielectric layer 116b. Second transparent conductive layer 118 It is disposed between the transmittance adjusting laminate 116 and the substrate 112.

In the present embodiment, the inorganic dielectric layer 116b in the transmittance adjusting stack 116 is located between the first transparent conductive layer 116a and the substrate 112. As shown in FIG. 1A, when the light L is irradiated from above the color filter 110 toward the color filter 110, the light L may sequentially pass through the transmittance adjusting stack 116 (the inorganic dielectric layer 116b and the first transparent conductive layer). 116a), a second transparent conductive layer 118, and a color filter unit 114. The refractive index of these layers can be determined by the material and thickness of each film layer, and the refractive index affects the transmittance of light L. In other words, the transmittance of the light L is related to the material and thickness of the above film layer. In this embodiment, the refractive index of the inorganic dielectric layer 116b is substantially smaller than the refractive index of the first transparent conductive layer 116a and the second transparent conductive layer 118.

In practice, indium tin oxide (ITO) having a refractive index substantially between 1.8 and 2.6 may be used as the material of the first transparent conductive layer 116a and the second transparent conductive layer 118, and preferably the refractive index is substantially Indium tin oxide between 1.9 and 2. It is worth mentioning that the material of the inorganic dielectric layer 116b of the present embodiment is, for example, selected from the group consisting of fluoride, inorganic oxide, inorganic nitride and inorganic nitrogen oxide. In more detail, the material of the inorganic dielectric layer 116b is, for example, magnesium fluoride, lanthanum oxide, tantalum nitride or hafnium oxynitride having a refractive index of between 1 and 2.4, preferably a refractive index of between 1 and 1.9. Between magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride.

In this embodiment, the thickness of the second transparent conductive layer 118 is substantially between 40 nm and 150 nm. On the other hand, in the transmittance adjusting stack 116 of the present embodiment, the thickness d1 of the inorganic dielectric layer 116b is substantially between Between 20 nm and 160 nm, and the thickness d2 of the first transparent conductive layer 116a is substantially between 40 nm and 150 nm.

However, after the light rays L pass through the red color filter unit 114R, the green filter unit 114G, and the blue filter unit 114B of different colors, respectively, the light transmittance may be different. In the present embodiment, the color filter 110 is provided with a transmittance adjusting laminate 116. By changing the thickness d of the transmittance adjusting laminate 116, the light transmittance of the light beam L through the color filter 110 can be adjusted. .

For example, a white light emitting diode with a blue light emitting diode chip and a red fluorescent powder and a green fluorescent powder is used as a light source (not shown) as an example. The light L of the light source is irradiated from above the color filter 110 toward the color filter 110, and passes through the red, green, and blue filter units 114R, 114G, and 114B, respectively. For the light L, the light transmittance of the green filter unit 114G is greater than the light transmittance of the red and blue filter units 114R, 114B. In this embodiment, the transmittance adjusting layer 116 is provided, and the thickness d of the transmittance adjusting laminate 116 is changed to adjust the light intensity of the light L after passing through the green filter unit 114G and the transmittance adjusting layer 116. In other words, the light intensity between the light rays corresponding to the different color filter units is adjusted by the transmittance adjustment stack 116 so that the overall light output meets the demand.

The following is a list of the color representations of the light source L of a light source as it passes through the color filter 110 of the present embodiment, as shown in Table 1. The light source is, for example, a white light emitting diode with a blue light emitting diode and a red fluorescent powder and a green fluorescent powder chip, and the light emitting spectrum of the light source is as shown in FIG. 1B. In the color filter 110, the material of the inorganic dielectric layer 116b is, for example, hafnium oxide (SiO ₂ ), and the material of the first/second transparent conductive layer 116a/118 is indium tin oxide. In addition, the thickness of the first transparent conductive layer 116a is 120 nm, and the thicknesses d1 and d2 of the inorganic dielectric layer 116b and the second transparent conductive layer 118 are 35 nm and 95 nm, respectively. It should be noted that the material of the inorganic dielectric layer 116b and the thickness of the first transparent conductive layer 116a, the inorganic dielectric layer 116b and the second transparent conductive layer 118 in the color filter 110 may be changed according to the requirements of the product. The invention is not intended to limit these parameters.

As shown in Table 1, W ₁ and W _y represent white chromaticity coordinate values. It can be seen from Table 1 that when the light L of the above-mentioned light source passes through the color filter 110, the color performance of the white point color temperature of 6490K can be exhibited. In general, the white point color temperature of the LCD screen is roughly between 6000K and 7000K, and the white point color temperature of 6490K in Table 1 is just between 6000K and 7000K. Therefore, the color filter 110 of the embodiment is suitable for use with a white light emitting diode light source composed of a blue light emitting diode, a red phosphor powder and a green phosphor powder wafer, and can be applied to a liquid crystal display screen. .

The color representation of the light source L of another light source when it penetrates the color filter 110 of the present embodiment is shown below, as shown in Table 2. The light source is, for example, another white light emitting diode with a blue light emitting diode and a red fluorescent powder and a green fluorescent powder chip, and the light emitting spectrum of the light source is as shown in FIG. 1C. What remains to be noted here is that the material of the inorganic dielectric layer 116b in the color filter 110 and the first transparent conductive layer 116a and the inorganic dielectric layer 116b The thickness of the second transparent conductive layer 118 may vary depending on the needs of the product, and the present invention is not intended to limit these parameters.

It can be seen from Table 2 that when the light L of the above-mentioned light source passes through the color filter 110, the color performance of the white point color temperature of 10199K can be exhibited. In general, the white point color temperature of LCD TVs is roughly between 9000K and 11000K, while the white point color temperature of 10199K in Table 2 is just between 9000K and 11000K. Therefore, the color filter 110 of the embodiment is also suitable for use with a white light emitting diode light source composed of a blue light emitting diode, a red phosphor powder and a green phosphor powder wafer, and can be applied to an LCD TV. .

Only the liquid crystal screen and the liquid crystal television are listed as the present embodiment, and other types of displays will not be described one by one. That is, the color filter 110 of the present embodiment can also be applied to other kinds of displays.

In the present embodiment, when the light intensity of the light L is adjusted by the transmittance adjusting laminate 116, the light intensity of the light emitted from the entire color of the color filter 110 is low. However, the combination of the color filter 110 and a low color temperature light source (for example, a low color temperature white light emitting diode) is applied to the display, and since the low color temperature light source has better luminous efficiency, the brightness of the display is It is not lowered by the configuration of the transmittance adjusting laminate 116.

It is worth mentioning that even when white light-emitting diodes are fabricated under the same process conditions, the optical characteristics of different white light-emitting diodes are still slightly poor. different. However, the color filter 110 of the present embodiment can adjust the thickness d of the transmittance adjusting stack 116 to compensate for the difference in optical characteristics of the above-described white light emitting diode.

Further, in combination with the white light emitting diode and the color filter 110 of the embodiment, when the white point color temperature is not as expected, the material of the inorganic dielectric layer 116b or the transmittance can be changed. The thicknesses d1 and d2 of the first transparent conductive layer 116a and the inorganic dielectric layer 116b in the layer 116 are adjusted to compensate for the difference in optical characteristics of the white light-emitting diode described above.

1D is a cross-sectional view showing another color filter of the first embodiment of the present invention. Please refer to FIG. 1D. The color filter 110' of this embodiment is similar to the color filter 110. The difference is that there is only one layer of the transmittance adjusting stack 116 in the color filter 110, and two layers of the transmittance adjusting stack 116 are disposed in the color filter 110'. As can be seen from Fig. 1D, the transmittance adjusting stack 116 of the color filter 110' has a stack thickness d'. Therefore, when the above-mentioned white light emitting diode light source is combined with the color filter 110' of different stacked thicknesses d', the light penetrating the color filter 110' can have different optical characteristics. Furthermore, the present embodiment can change the stack thickness d' of the transmittance adjusting stack 116 by stacking the multilayer transmittance adjusting stack 116, thereby compensating for the optical characteristics of the white light emitting diode source. difference.

[Second embodiment]

This embodiment is similar to the first embodiment. The main difference between this embodiment and the first embodiment is that in the embodiment, the second transparent conductive layer is not disposed in the color filter, and the transmittance adjustment stack is disposed. Includes a transparent conductive layer and Inorganic dielectric layer.

2 is a cross-sectional view showing a color filter of a second embodiment of the present invention. Referring to FIG. 2 , the color filter 210 of the embodiment includes a substrate 212 , a plurality of color filter units 214 , and a transmittance adjustment stack 216 . The color filter unit 214 is disposed on the substrate 212. The color filter unit 214 is composed of, for example, a red filter unit 214R, a green filter unit 214G, and a blue filter unit 214B. The transmittance adjustment stack 216 is disposed on the substrate 212 and covers the color filter unit 214. In addition, the transmittance adjusting layer 216 includes a transparent conductive layer 216a and an inorganic dielectric layer 216b, wherein the inorganic dielectric layer 216b is made of a material selected from the group consisting of fluoride, inorganic oxide, inorganic nitride, and inorganic nitrogen oxide. The group of people formed.

In the present embodiment, the inorganic dielectric layer 216b in the transmittance adjusting stack 216 is located between the transparent conductive layer 216a and the substrate 212. The material of the transparent conductive layer 216a is, for example, indium tin oxide having a thickness substantially between 40 nm and 150 nm, wherein the transparent conductive layer 216a has a refractive index substantially between 1.8 and 2.6, preferably 1.9 and 2.6. between. Further, the refractive index of the inorganic dielectric layer 216b is substantially smaller than the refractive index of the transparent conductive layer 216a. However, other components are similar to those of the first embodiment, and will not be described here. It is worth mentioning that the color filter 210 of the embodiment can also be applied to both the liquid crystal screen and the liquid crystal television.

As shown in FIG. 2, when the color filter 210 of the present embodiment is used together with a white light emitting diode light source composed of a blue light emitting diode, a red fluorescent powder and a green fluorescent powder wafer, the color filter 210 can effectively compensate for different The difference in optical characteristics of white light-emitting diodes. Adjusting the transparent conductive layer 216a and the inorganic The thickness of the dielectric layer 216b further allows the color filter 210 to have a good color performance.

[Third embodiment]

This embodiment is similar to the second embodiment. The main difference between this embodiment and the second embodiment is that in the embodiment, the color filter includes at least two transmittance adjustment stacks, and the transmittance adjustment is performed. The inorganic dielectric layer in the laminate can optionally be made of a suitable material depending on the needs of the product.

3 is a cross-sectional view showing a color filter of a third embodiment of the present invention. Referring to FIG. 3 , the color filter 310 of the embodiment includes a substrate 312 , a plurality of color filter units 314 , and two transmittance adjustment stacks 316 . The color filter unit 314 is disposed on the substrate 312. The transmittance adjusting laminates 316 are disposed on the substrate 312 stacked on each other and cover the color filter unit 314. Each of the transmittance adjusting laminates 316 includes a transparent conductive layer 316a and an inorganic dielectric layer 316b.

In the present embodiment, the material of the inorganic dielectric layer 316b is, for example, selected from the group consisting of fluoride, inorganic oxide, inorganic nitride or inorganic nitrogen oxide. In more detail, the material of the inorganic dielectric layer 316b is magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride. However, the other components are similar to those of the second embodiment, and the same or similar reference numerals in FIG. 2 and FIG. 3 denote the same or similar components, and will not be further described herein. It is worth mentioning that the color filter 310 of the embodiment can also be applied to both the liquid crystal screen and the liquid crystal television.

In other embodiments, the color filter 310 can be further configured with three or more transmittance adjusting laminations 316. Due to the color filter of this embodiment 310 has a multilayer transmittance adjusting stack 316, so when the color filter 310 is used with a white light emitting diode light source composed of a blue light emitting diode, a red phosphor and a green phosphor powder wafer, The thickness of the transparent conductive layer 316a and the inorganic dielectric layer 316b in each layer transmittance adjusting stack 316 can be fine tuned. In other words, the color filter 310 of the present embodiment not only has the advantages of the color filter 210 of the second embodiment, but also makes the thickness adjustment of the transmittance adjusting laminate 316 more flexible. Therefore, the light transmittance of different wavelengths will be closer, and the optical characteristics of the light emitted by different white light emitting diodes can be compensated.

Fourth Embodiment

The display of the fourth embodiment is the application of the color filters of the first, second and third embodiments described above, and the architecture of the three displays will be described below.

4, FIG. 5 and FIG. 6 are schematic cross-sectional views of three displays according to a fourth embodiment of the present invention, wherein FIG. 4, FIG. 5 are similar to the display of FIG. 6, except that the color filter in each display is The light is not the same.

Referring to FIG. 4, the display 400 of the present embodiment includes a display panel 402 and a backlight module 404. The display panel 402 includes the color filter 110 of the first embodiment, an active device array substrate 420, and a display medium. Layer 430. The display medium layer 430 is disposed between the color filter 110 and the active device array substrate 420. The backlight module 404 is disposed adjacent to the display panel 402 for providing a backlight LS to the display panel 402.

Then, the display 500 of the embodiment includes a display panel 502 and a backlight module 504, wherein the display panel 502 includes The color filter 210, an active device array substrate 520, and a display medium layer 530 of the second embodiment. In addition, the arrangement relationship between the display panel 502, the backlight module 504, the active device array substrate 520, the display medium layer 530, and the color filter 210 in the display 500 is similar to that of the components in the display 400 and functions thereof. Repeatedly.

Then, the display 600 of the present embodiment includes a display panel 602 and a backlight module 604. The display panel 602 includes the color filter 310 of the third embodiment, an active device array substrate 620, and a display. Dielectric layer 630. In addition, the arrangement relationship between the display panel 602, the backlight module 604, the active device array substrate 620, the display medium layer 630, and the color filter 310 in the display 600 is similar to that of the components in the displays 400 and 500, and functions thereof. This is not to be described.

As shown in FIG. 4, FIG. 5 and FIG. 6, the backlights LS provided by the backlight modules 404, 504 and 604 of the present embodiment are, for example, blue light emitting diode chips with red phosphor powder and green phosphor powder. In the light emitting diode, when the light of the backlight LS is directed toward the driving display panels 402, 502, and 602, the displays 400, 500, and 600 can display a picture. Therefore, the optical characteristics exhibited by the backlight LS directly affect the color performance of the displays 400, 500, and 600. The display medium layers 430, 530, and 630 are exemplified by a liquid crystal layer.

However, the displays 400, 500, and 600 of the present embodiment employ color filters 110, 210, and 310 having transmittance adjustment stacks 116, 216, and 316, respectively. As such, displays 400, 500, and 600 can be adjusted by adjusting the transmittance adjustment stacks 116, 216 in color filters 110, 210, and 310. Adjusting the thickness of the 316 and changing the transmittance to adjust the material of the inorganic dielectric layers 116b, 216b and 316b in the stacks 116, 216 and 316 to compensate for the optical properties of the backlight LS (e.g., the white light emitting diode described above) difference. This not only improves the display quality of the displays 400, 500 and 600, but also the application of the displays 400, 500 and 600 is not limited to the selected backlight LS, thus contributing to a reduction in manufacturing costs.

Furthermore, as seen by the first, second and third embodiments, the color filters 110, 210 and 310 can be applied to liquid crystal screens, liquid crystal televisions or other types of displays. In other words, the color filter of the present embodiment is extremely broad in application and is not limited to a specific use group.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

110, 110', 210, 310‧‧‧ color filters

112, 212, 312‧‧‧ substrates

114, 214, 314‧‧‧ color filter unit

114R, 214R, 314R‧‧‧ red filter unit

114G, 214G, 314G‧‧‧ green filter unit

114B, 214B, 314B‧‧‧ blue filter unit

116, 216, 316‧‧‧ penetration adjustment stack

116a‧‧‧First transparent conductive layer

116b, 216b, 316b‧‧‧ inorganic dielectric layer

118, 218, 318‧‧‧ second transparent conductive layer

216a, 316a‧‧‧ transparent conductive layer

400, 500, 600‧‧‧ display

402, 502, 602‧‧‧ display panels

404, 504, 604‧‧‧ backlight module

420, 520, 620‧‧‧ active device array substrate

430, 530, 630‧‧‧ display media layer

D1, d2, d‧‧‧ thickness

D’‧‧‧Stack thickness

L‧‧‧Light

LS‧‧‧Backlight

1A is a schematic cross-sectional view showing a color filter of a first embodiment of the present invention.

FIG. 1B is a light emission spectrum of a light source according to a first embodiment of the present invention.

Fig. 1C is a light-emitting spectrum of another light source according to the first embodiment of the present invention.

1D is a cross-sectional view showing another color filter of the first embodiment of the present invention.

2 is a cross-sectional view showing a color filter of a second embodiment of the present invention.

3 is a cross-sectional view showing a color filter of a third embodiment of the present invention.

4, 5 and 6 are schematic cross-sectional views of three displays according to a fourth embodiment of the present invention.

110‧‧‧Color filters

112‧‧‧Substrate

114‧‧‧Color Filter Unit

114R‧‧‧Red Filter Unit

114G‧‧‧Green Filter Unit

114B‧‧‧Blue Filter Unit

116‧‧‧Transmission rate adjustment stack

116a‧‧‧First transparent conductive layer

116b‧‧‧Inorganic dielectric layer

118‧‧‧Second transparent conductive layer

D1, d2, d‧‧‧ thickness

L‧‧‧Light

Claims (40)

A color filter comprising: a substrate; a plurality of color filter units disposed on the substrate; at least one transmittance adjustment stack disposed on the substrate and covering the color filter units, each The transmittance adjusting layer includes a first transparent conductive layer and an inorganic dielectric layer, and the inorganic dielectric layer is located between the first transparent conductive layer and the substrate; and a second transparent conductive layer disposed thereon At least one transmittance adjustment stack is interposed between the substrate. The color filter of claim 1, wherein the inorganic dielectric layer is made of a fluoride, an inorganic oxide, an inorganic nitride or an inorganic nitrogen oxide. The color filter of claim 2, wherein the material of the inorganic dielectric layer comprises magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride. The color filter of claim 1, wherein the first transparent conductive layer is made of indium tin oxide. The color filter of claim 1, wherein the second transparent conductive layer is made of indium tin oxide. The color filter of claim 1, wherein the inorganic dielectric layer has a refractive index smaller than a refractive index of the first transparent conductive layer and a refractive index of the second transparent conductive layer. The color filter of claim 1, wherein the color filter The inorganic dielectric layer has a refractive index between 1 and 2.4. The color filter of claim 1, wherein the refractive index of the first transparent conductive layer and the refractive index of the second transparent conductive layer are between 1.8 and 2.6. The color filter of claim 1, wherein the first transparent conductive layer has a thickness of between 40 nm and 150 nm. The color filter of claim 1, wherein the second transparent conductive layer has a thickness of between 40 nm and 150 nm. The color filter of claim 1, wherein the inorganic dielectric layer has a thickness between 20 nm and 160 nm. A color filter comprising: a substrate; a plurality of color filter units disposed on the substrate; and at least two transmittance adjusting stacks disposed on the substrate on top of each other and covering the color filters The light unit, each transmittance adjusting layer comprises a transparent conductive layer and an inorganic dielectric layer, and the inorganic dielectric layer is located between the transparent conductive layer and the substrate. The color filter of claim 12, wherein the material of the inorganic dielectric layer in each transmittance adjusting layer comprises fluoride, inorganic oxide, inorganic nitride or inorganic nitrogen oxide. . The color filter of claim 13, wherein the material of the inorganic dielectric layer in each transmittance adjusting layer comprises magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride. A color filter according to claim 12, wherein The material of the transparent conductive layer in each transmittance adjusting stack is indium tin oxide. The color filter of claim 12, wherein the refractive index of the inorganic dielectric layer in each transmittance adjusting stack is smaller than the refractive index of the transparent conductive layer. The color filter of claim 12, wherein the inorganic dielectric layer in each transmittance adjusting stack has a refractive index between 1 and 2.4. The color filter of claim 12, wherein the transparent conductive layer in each transmittance adjusting stack has a refractive index between 1.8 and 2.6. The color filter of claim 12, wherein the thickness of the transparent conductive layer in each transmittance adjusting stack is between 40 nm and 150 nm. The color filter of claim 12, wherein the thickness of the inorganic dielectric layer in each of the transmittance adjusting stacks is between 20 nm and 160 nm. A display comprising: a display panel comprising: a color filter comprising: a substrate; a plurality of color filter units disposed on the substrate; at least one transmittance adjustment stack disposed on the substrate, And covering the color filter units, each transmittance adjustment stack The layer includes a first transparent conductive layer and an inorganic dielectric layer, and the inorganic dielectric layer is located between the first transparent conductive layer and the substrate; and a second transparent conductive layer disposed at the at least one transmittance An active device array substrate; and a display dielectric layer disposed between the color filter and the active device array substrate; and a backlight module disposed adjacent to the display panel To provide a backlight to the display panel. The display of claim 21, wherein the inorganic dielectric layer is made of a fluoride, an inorganic oxide, an inorganic nitride or an inorganic nitrogen oxide. The display of claim 22, wherein the material of the inorganic dielectric layer comprises magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride. The display of claim 21, wherein the first transparent conductive layer is made of indium tin oxide. The display of claim 21, wherein the second transparent conductive layer is made of indium tin oxide. The display of claim 21, wherein the inorganic dielectric layer has a refractive index smaller than a refractive index of the first transparent conductive layer and a refractive index of the second transparent conductive layer. The display of claim 21, wherein the The dielectric layer has a refractive index between 1 and 2.4. The display of claim 21, wherein the refractive index of the first transparent conductive layer and the refractive index of the second transparent conductive layer are between 1.8 and 2.6. The display of claim 21, wherein the first transparent conductive layer has a thickness between 40 nm and 150 nm. The display of claim 21, wherein the second transparent conductive layer has a thickness between 40 nm and 150 nm. The display of claim 21, wherein the inorganic dielectric layer has a thickness between 20 nm and 160 nm. A display comprising: a display panel comprising: a color filter comprising: a substrate; a plurality of color filter units disposed on the substrate; and at least two transmittance adjustment stacks disposed on each other On the substrate, and covering the color filter units, each transmittance adjustment stack includes a transparent conductive layer and an inorganic dielectric layer, and the inorganic dielectric layer is located between the transparent conductive layer and the substrate An active device array substrate; and a display dielectric layer disposed between the color filter and the active device array substrate; and a backlight module disposed adjacent to the display panel to provide a backlight To the display panel. The display of claim 32, wherein the material of the inorganic dielectric layer in each transmittance adjusting stack comprises fluoride, inorganic oxide, inorganic nitride or inorganic nitrogen oxide. The display of claim 33, wherein the material of the inorganic dielectric layer in each of the transmittance adjusting laminates comprises magnesium fluoride, cerium oxide, cerium nitride or cerium oxynitride. The display of claim 32, wherein the transparent conductive layer in each of the transmittance adjusting laminates is made of indium tin oxide. The display of claim 32, wherein the refractive index of the inorganic dielectric layer in each transmittance adjusting stack is less than the refractive index of the transparent conductive layer. The display of claim 32, wherein the inorganic dielectric layer in each transmittance adjusting stack has a refractive index between 1 and 2.4. The display of claim 32, wherein the transparent conductive layer in each transmittance adjusting stack has a refractive index between 1.8 and 2.6. The display of claim 32, wherein the thickness of the transparent conductive layer in each transmittance adjusting stack is between 40 nm and 150 nm. The display of claim 32, wherein the thickness of the inorganic dielectric layer in each transmittance adjusting stack is between 20 nm and 160 nm.