CN112162432B

CN112162432B - Display device and display method thereof

Info

Publication number: CN112162432B
Application number: CN202011030442.2A
Authority: CN
Inventors: 王咏圣; 杨昌弘; 李仰淳; 王彦凯
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2020-06-09
Filing date: 2020-09-27
Publication date: 2023-02-24
Anticipated expiration: 2040-09-27
Also published as: TW202146987A; CN112162432A; TWI734513B

Abstract

The invention discloses a display device which is suitable for providing an image light beam. The display device comprises a light-emitting module, a driving element, a light valve module and a filter layer. The light emitting module is suitable for providing an illumination light beam. The driving element is electrically connected to the light emitting module. The light valve module and the filter layer are arranged on the transmission path of the illumination light beam. The filter layer includes a plurality of first filter units and a plurality of second filter units, wherein the illumination light beams respectively generate a first light beam group and a second light beam group after passing through the first filter units and the second filter units. The first light beam group and the second light beam group have different wavelengths, and the image light beam is composed of the first light beam group and the second light beam group. The image light beams comprise at least five light beams with different wavelengths and the full width at half maximum is larger than 10 nanometers.

Description

Display device and display method thereof

Technical Field

The invention relates to an electronic device and a driving method thereof, and more particularly, to a display device and a display method thereof.

Background

In recent years, with the rapid development of semiconductor technology, portable electronic products and flat panel display products have been developed. Among the types of flat panel displays, liquid Crystal Displays (LCDs) have become the mainstream of display products because of their advantages of low voltage operation, no radiation scattering, light weight, and small size.

In order to increase the color gamut of liquid crystal displays, a multi-primary display has been developed. Unlike the conventional three-primary-color display that uses three colors of Red (R), green (G) and Blue (B) to achieve color mixing, the multi-primary-color display uses four or more colors to achieve color mixing, so that the multi-primary-color display can have a wider color gamut range. However, the cost of the current six-primary color display is too high and the manufacturing process is complicated. Therefore, the skilled person is interested in designing a color gamut range that can increase the color gamut provided by the display to improve the display effect.

Disclosure of Invention

The invention provides a display device and a display method thereof, which can increase the color gamut range provided by display and improve the display effect.

An embodiment of the invention provides a display device, which is suitable for providing an image beam. The display device comprises a light-emitting module, a driving element, a light valve module and a filter layer. The light emitting module is suitable for providing an illuminating light beam. The driving element is electrically connected to the light emitting module. The light valve module is configured on the transmission path of the illumination beam. The filter layer is disposed on a transmission path of the illumination beam, and the filter layer includes a plurality of first filter units and a plurality of second filter units, wherein the illumination beam respectively generates a first beam set and a second beam set after passing through the first filter units and the second filter units. The first light beam group and the second light beam group have different wavelengths, and the image light beam is composed of the first light beam group and the second light beam group. The image beam comprises at least five beams with different wavelengths and a full width at half maximum of more than 10 nanometers.

Another embodiment of the present invention provides a display method of a display device, including driving a light-emitting module to emit an illumination beam; driving a light valve module to allow a portion of the illumination beam to pass through; and one part of the illuminating light beams passes through a filter layer to generate a display light beam, wherein the illuminating light beams pass through a plurality of first filter units and a plurality of second filter units of the filter layer to generate a first light beam group and a second light beam group with different wavelengths. The image beam is composed of a first beam set and a second beam set. The image light beams comprise at least five light beams with different wavelengths and the full width at half maximum is larger than 10 nanometers.

In view of the above, in the display device and the display method thereof of the present invention, the light emitting module provides the illumination light beams to pass through the plurality of first filter units and the plurality of second filter units of the filter layer to generate the first light beam group and the second light beam group with different wavelengths, respectively. Therefore, the image light beams formed by the first light beam group and the second light beam group comprise at least five light beams with different wavelengths and the full width at half maximum of more than 10 nanometers, so that the color gamut range provided by the display can be enlarged, and the display effect is improved.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic cross-sectional view of a display device according to an embodiment of the invention.

Fig. 2 is a schematic top view of a light emitting module in the display device of fig. 1.

Fig. 3 is a schematic top view of a filter layer in the display device of fig. 1.

Fig. 4 is a perspective view of a portion of the display device of fig. 1.

Fig. 5 is a schematic cross-sectional view of a display device according to another embodiment of the invention.

Fig. 6 is a schematic top view of a light emitting module in the display device of fig. 5.

FIG. 7 is a schematic top view of a color conversion layer in the display device of FIG. 5.

Fig. 8 is a schematic top view of a filter layer in the display device of fig. 5.

FIG. 9 is a perspective view of a portion of the display device of FIG. 5.

FIGS. 10A and 10B are schematic diagrams of the performance of the display device of FIG. 5 in color space, respectively.

Fig. 11 is a distribution diagram of light emitting wavelengths of the light emitting module according to an embodiment of the invention.

FIG. 12 is a flowchart illustrating a display method of a display device according to an embodiment of the invention.

Wherein, the reference numbers:

100,100A display device

110,110A light emitting module

112 light-emitting layer

112 u 1 first light emitting element

112 u 2 second light emitting element

114 color conversion layer

114 u 1 first color conversion part

114 u 2 second color conversion part

120 driving element

130 light valve module

140,140A filter layer

150 protective cover plate

201,202 curve

C1 first filter element

C2 second filter element

C3 third filter element

C4 fourth light filter element

C5 fifth filter element

C6 sixth light filtering element

D1 first direction

D2 the second direction

E1 first light-emitting Unit

E2 second light-emitting unit

F1: first light filtering unit

F2 second light filtering unit

L1 illumination beam

L11 first sub-illumination beam

L12 second sub-illumination beam

L2 image beam

L21 first light beam group

L22 second light beam group

P pixel unit

S300-S302 step

Detailed Description

In the drawings, the thickness of layers, films, panels, regions, etc. have been exaggerated for clarity. Like reference numerals refer to like elements throughout the specification. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connections. Further, "electrically connected" or "coupled" may mean that there are additional elements between the two elements.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a "first element," "component," "region," "layer" or "portion" discussed below could be termed a second element, component, region, layer or portion without departing from the teachings herein.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms, including "at least one", unless the content clearly indicates otherwise. "or" means "and/or". As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions integers, steps, operations, elements, components, and/or groups thereof.

Furthermore, relative terms, such as "lower" or "bottom" and "upper" or "top," may be used herein to describe one element's relationship to another element, as illustrated. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is turned over, elements described as being on the "lower" side of other elements would then be oriented on "upper" sides of the other elements. Thus, the exemplary term "lower" can encompass both an orientation of "lower" and "upper," depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "below" or "beneath" can encompass both an orientation of above and below.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Exemplary embodiments are described herein with reference to cross-section illustrations that are schematic illustrations of idealized embodiments. Thus, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the embodiments described herein should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, a region shown or described as flat may generally have rough and/or nonlinear features. Further, the acute angles shown may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the claims.

Fig. 1 is a schematic cross-sectional view of a display device according to an embodiment of the invention. Please refer to fig. 1. The present embodiment provides a display device 100, which is suitable for providing an image light beam L2. The display device 100 is, for example, an Organic Light-Emitting Diode (OLED) display or a Light-Emitting Diode (LED) display, such as a television or an electronic signboard, but the invention is not limited thereto. The image beam L2 includes at least five beams with different wavelengths and a full width at half maximum greater than 10 nm. Therefore, the geometry of the image beam L2 defined on the color space is a polygon, such as a hexagon in the present embodiment.

Fig. 2 is a schematic top view of a light emitting module in the display device of fig. 1. Please refer to fig. 1 and fig. 2 simultaneously. The display device 100 includes a light emitting module 110, a driving device 120, a light valve module 130, a filter layer 140, and a cover plate 150. The light emitting module 110 is adapted to provide an illumination light beam L1. The Light Emitting module 110 may be, for example, a Liquid Crystal Display (LCD), a Cathode Ray Tube (CRT) Display, a Light Emitting Diode (LED) Display, a Plasma Display Panel (PDP), an Organic Light Emitting Diode (OLED) Display, or a Field Emission Display (FED). In the embodiment, the light emitting module 110 is an organic light emitting diode display, but the invention is not limited thereto.

In detail, in the present embodiment, the light emitting module 110 includes a plurality of first light emitting units E1 and a plurality of second light emitting units E2, which are arranged in a staggered manner to provide a plurality of first sub-illumination light beams L11 and a plurality of second sub-illumination light beams L12 with different wavelengths, respectively. In other words, the light emitting module 110 is composed of a plurality of first light emitting units E1 and a plurality of second light emitting units E2, and the first light emitting units E1 and the second light emitting units E2 respectively emit different white lights in a staggered manner, but the invention is not limited thereto. In some embodiments, the first sub-illumination light beams L11 and the second sub-illumination light beams L12 with different wavelengths may also be generated by software or by changing driving electrical property, instead of configuring the first light-emitting unit E1 and the second light-emitting unit E2 differently, which is not limited in the present invention.

The driving element 120 is electrically connected to the light emitting module 110. In this embodiment, the driving element 120 can drive the first light emitting unit E1 and the second light emitting unit E2 respectively or simultaneously according to the requirements of different applications. For example, the driving element 120 may drive the first light emitting unit E1 in the light emitting module 110, drive the second light emitting unit E2 in the light emitting module 110, or drive the whole light emitting module 110 according to the display requirement.

The light valve module 130 is disposed on the transmission path of the illumination beam L1 and is adapted to selectively let the illumination beam L1 pass through. For example, the light valve module 130 is a liquid crystal module, and can select a portion of the illumination beam L1 to pass through by way of circuit control, but the invention is not limited thereto. For example, the light valve module 130 may let the first sub-illumination beam L11, the second sub-illumination beam L12, or the whole illumination beam L1 pass through according to the display requirement. In other words, whether the first sub-illumination beam L11 or the second sub-illumination beam L12 is selected to pass or not may be determined by using the driving element 120 or the light valve module 130, but the invention is not limited thereto. The protective cover 150 is disposed on the light valve module 130, and the material of the protective cover may be plastic or glass, but the invention is not limited thereto.

Fig. 3 is a schematic top view of a filter layer in the display device of fig. 1. Please refer to fig. 1 and fig. 3. The filter layer 140 is disposed on the transmission path of the illumination beam L1 and located between the light valve module 130 and the protective cover 150. Specifically, the filter layer 140 includes a plurality of first filter units F1 and a plurality of second filter units F2, and is disposed on the transmission path of the first sub-illumination light beam L11 and the transmission path of the second sub-illumination light beam L12, respectively. In other words, the wavelength of light transmitted to the first filter unit F1 is different from the wavelength of light transmitted to the second filter unit F2. Therefore, the first sub-illumination light beams L11 and the second sub-illumination light beams L12 respectively pass through the first filter unit F1 and the second filter unit F2 to generate a first light beam group L21 and a second light beam group L22, wherein the first light beam group L21 and the second light beam group L22 have different wavelengths, and the image light beam L2 is composed of the first light beam group L21 and the second light beam group L22.

Fig. 4 is a perspective view of a portion of the display device of fig. 1. Please refer to fig. 1 to fig. 4. More specifically, in the present embodiment, each of the first filter units F1 includes a first filter element C1, a second filter element C2 and a third filter element C3, and each of the second filter units F2 includes a fourth filter element C4, a fifth filter element C5 and a sixth filter element C6. The first filter element C1 and the fourth filter element C4 are, for example, green filters with different wavelength ranges, the second filter element C2 and the fifth filter element C5 are, for example, blue filters with different wavelength ranges, and the third filter element C3 and the sixth filter element C6 are, for example, red filters with different wavelength ranges. In the embodiment, the first filter units F1 and the second filter units F2 are arranged in an array and in a staggered manner, as shown in fig. 3, but the invention is not limited thereto.

In the present embodiment, the first filter element C1, the second filter element C2, the third filter element C3, the fourth filter element C4, the fifth filter element C5 and the sixth filter element C6 which are adjacent to each other and the corresponding first light emitting unit E1 and the second light emitting unit E2 are regarded as a pixel unit P, and each pixel unit P is arranged in an array manner as shown in fig. 4. However, the present invention is not limited to the arrangement of each pixel unit P. For the first filter element C1, the first filter element C1 is circularly arranged every six sub-pixels in the first direction D1, and is circularly arranged every two sub-pixels in the second direction D1, but the invention is not limited thereto.

Therefore, when the first sub-illumination beam L11 passes through the first filter element C1, the second filter element C2 and the third filter element C3 of the first filter unit F1, a first sub-beam, a second sub-beam and a third sub-beam (not shown) are generated respectively. When the second sub-illumination beam L12 passes through the fourth filter element C4, the fifth filter element C5 and the sixth filter element C6 of the second filter unit F2, a fourth sub-beam, a fifth sub-beam and a sixth sub-beam (not shown) are generated, respectively. In other words, the first light beam set L21 is composed of the first to third sub-light beams, the second light beam set L22 is composed of the fourth to sixth sub-light beams, and the first to sixth sub-light beams are green, blue, red, green, blue, and red light beams respectively, and have different wavelengths from each other. Therefore, the image beam L2 composed of the first beam group L21 and the second beam group L22 has a hexagonal shape in the color space. Therefore, the color gamut range provided by the display can be increased, and the display effect is further improved.

In the present embodiment, the light emitting module 110 may include a plurality of scan lines and a plurality of data lines (not shown), wherein the scan lines and the data lines are disposed to cross each other with an insulating layer interposed therebetween. In other words, the extending direction of the scan line is not parallel to the extending direction of the data line. Preferably, the extending direction of the scan line is perpendicular to the extending direction of the data line. For the sake of conductivity, the scan lines and the data lines are generally made of metal. For example, in the present embodiment, the scan lines are distributed in each light emitting unit along the first direction D1 to correspond to each filter element, and the data lines are distributed in each light emitting unit along the second direction D2 to correspond to each filter element. Therefore, different light-emitting units can be driven by the scanning lines and the data lines respectively to provide different color effects.

Specifically, in the present embodiment, the hexagonal coordinates formed by the image light beam L2 on the color space are: r1 (0.685, 0.315), R2 (0.670, 0.330), G1 (0.265, 0.690), G2 (0.210, 0.710), B1 (0.118, 0.087) and B2 (0.150, 0.060). The effective color gamut area of the image beam L2 in the CIE 1931 color space is 116.2%, 121.7%, 164.1% and 121.0% of the effective color gamut area of the conventional NTSC color space, the conventional Adobe color space, the conventional sRGB color space and the conventional DCI-P3 color space, respectively. On the other hand, the effective gamut area of the image beam L2 in the CIE 1976 color space is 130.2%, 128.0%, 149.4% and 119.0% of the effective gamut area in the conventional NTSC color space, the conventional Adobe color space, the conventional sRGB color space and the conventional DCI-P3 color space, respectively.

Fig. 5 is a schematic cross-sectional view of a display device according to another embodiment of the invention. Please refer to fig. 5. The display device 100A of the present embodiment is similar to the display device 100 shown in fig. 1. The difference between the two is that in the present embodiment, the light emitting module 110A of the display device 100A includes a light emitting layer 112 and a color conversion layer 114, and the color conversion layer 114 is disposed on the light emitting layer 112. The light emitting module 110A uses a blue light emitting diode as a light source, and provides a light beam passing through the color conversion layer 114. The filter layer 140A of the present embodiment is also different from the filter layer 140 shown in fig. 1, and will be described in detail later.

Fig. 6 is a schematic top view of a light emitting module in the display device of fig. 5. FIG. 7 is a schematic top view of a color conversion layer in the display device of FIG. 5. Please refer to fig. 5 to fig. 7. In detail, the light emitting layer 112 includes a plurality of first light emitting elements 112 _1and a plurality of second light emitting elements 112_2. In the present embodiment, the first light emitting element 112_1 uses a light emitting diode of 473 nm wavelength, and the second light emitting element 112_2 uses a light emitting diode of 449 nm wavelength, but the present invention is not limited thereto. The color conversion layer 114 includes a plurality of first color conversion members 114_1 and a plurality of second color conversion members 114_2, wherein the first color conversion members 114_1 are adapted to convert the light beam provided by the first light emitting element 112_1 into the first sub-illumination light beam L11 of the previous embodiment, and the second color conversion members 114_2 are adapted to convert the light beam provided by the second light emitting element 112_2 into the second sub-illumination light beam L12 of the previous embodiment.

In other words, each first light emitting element 112_1 and the corresponding first color conversion member 114_1 constitute the first light emitting unit E1 of the foregoing embodiment, and each second light emitting element 112_2 and the corresponding second color conversion member 114_2 constitute the second light emitting unit E2 of the foregoing embodiment. Therefore, the first sub-illumination light beam L11 and the second sub-illumination light beam L12 are provided by the first light emitting unit E1 and the second light emitting unit E2, respectively, and the wavelength of the first sub-illumination light beam L11 is different from the wavelength of the second sub-illumination light beam L12. In the present embodiment, the first light-emitting unit E1, the second light-emitting unit E2, the first color conversion member M1 and the second color conversion member M2 are all linearly arranged in the horizontal direction, and in the vertical direction, the first light-emitting unit E1 and the second light-emitting unit E2 are repeatedly arranged in a 1 to 2 manner, so that the first color conversion member M1 and the second color conversion member M2 are also repeatedly arranged in a 1 to 2 manner, as shown in fig. 6 and 7, but the present invention is not limited thereto.

Fig. 8 is a schematic top view of a filter layer in the display device of fig. 5. FIG. 9 is a perspective view of a portion of the display device of FIG. 5. Please refer to fig. 5, fig. 8 and fig. 9. Compared to the previous embodiment, each of the first filter units F1 of the filter layer 140A of the present embodiment includes a first filter element C1, a second filter element C2 and a third filter element C3, and each of the second filter units F2 includes a fourth filter element C4 and a fifth filter element C5. The first filter element C1 and the fourth filter element C4 are, for example, green filters with different wavelength ranges, the second filter element C2 and the fifth filter element C5 are, for example, blue filters with different wavelength ranges, and the third filter element C3 is, for example, a red filter. In other words, in the filter layer 140A of the present embodiment, a single set of the first filter unit F1 and the second filter unit F2 only has a single red filter.

In the present embodiment, the first filter element C1 and the second filter element C2 are sequentially and repeatedly arranged in a first direction D1. The third filter elements C3 are linearly arranged in a first direction D1 at a distance of one sub-pixel, and the third filter elements C3 are correspondingly located between the first filter elements C1 and the second filter elements C2 in a second direction D2 perpendicular to the first direction D1. The fourth filter element C4 and the fifth filter element C5 are repeatedly arranged in sequence in the first direction D1. The first filter element C1, the third filter element C3 and the fourth filter element C4 are sequentially and repeatedly arranged in the second direction D2. The third filter element C3 is arranged to be offset from the first filter element C1, the second filter element C2, the fourth filter element C4 and the fifth filter element C5 in the first direction D1. In other words, the third filter element C3 is located between the first filter element C1 and the second filter element C2 and the fourth filter element C4 and the fifth filter element C5. That is, the third filter elements C3 are arranged in a staggered manner along the second direction D2, and are arranged in a continuous manner along the first direction D1, and the first to fifth filter elements C1 to C5 are arranged in an H-shape. It should be noted that, in different embodiments, since the third filter elements C3 are continuously arranged in the first direction D1, the size of the third filter elements C3 can be designed to be different from the sizes of the other filter elements according to the requirement or the application field.

In the present embodiment, the first filter element C1, the second filter element C2, the third filter element C3, the fourth filter element C4 and the fifth filter element C5 which are adjacent to each other are visible and correspond to the first light emitting element 112_1 or the second light emitting element 112_2, and the first color conversion member 114_1 or the second color conversion member 114_2, which are one pixel unit P, and each pixel unit P is arranged in an array manner, as shown in fig. 9. However, the present invention is not limited to the arrangement of each pixel unit P. For the first filter element C1, the first filter element C1 is circularly arranged every two sub-pixels in the first direction D1, and is circularly arranged every three sub-pixels in the second direction D1, but the invention is not limited thereto.

FIGS. 10A and 10B are schematic diagrams of the performance of the display device of FIG. 5 in color space, respectively. Please refer to fig. 5, fig. 10A and fig. 10B. It is worth mentioning that curve 201 is shown in the CIE 1931 color space in fig. 10A and curve 202 is shown in the CIE 1976 color space in fig. 10B. In the present embodiment, the image beam L2 includes five beams with different wavelengths and a full width at half maximum greater than 10 nm. In other words, the display device 100A is a five-color display device.

Fig. 11 is a distribution diagram of light emitting wavelengths of the light emitting module according to an embodiment of the invention. Please refer to fig. 8, fig. 9 and fig. 11. Therefore, in the present embodiment, the first light beam group L21 generated by the first filter unit F1 includes a plurality of first sub-light beams, a plurality of second sub-light beams and a plurality of third sub-light beams, and the second light beam group L22 generated by the second filter unit F2 includes a plurality of fourth sub-light beams and a plurality of fifth sub-light beams, each of the first sub-light beams, each of the second sub-light beams, each of the third sub-light beams, each of the fourth sub-light beams and each of the fifth sub-light beams are green, blue, red, green and blue light beams, respectively, and the wavelengths of the first sub-light beams, each of the second sub-light beams, each of the third sub-light beams, each of the fourth sub-light beams and each of the fifth sub-light beams are different from each other. In the present embodiment, the wavelengths of the first sub-beam, the second sub-beam, the third sub-beam, the fourth sub-beam, and the fifth sub-beam are 537 nm, 473 nm, 621 nm, 529 nm, and 449 nm, respectively, and the full widths at half maximum of these sub-beams are 36 nm, 14 nm, 18 nm, 40 nm, and 18 nm, respectively, as shown in fig. 11.

Therefore, the image light beams L2 composed of the first light beam group L21 and the second light beam group L22 are pentagonal in shape defined by the color space. Therefore, the color gamut range provided by the display can be increased, and the display effect is further improved. Meanwhile, the red light part is shared, so that the design complexity can be further reduced and the cost can be saved.

In the present embodiment, the light emitting module 110A may include a plurality of scan lines and a plurality of data lines (not shown), wherein the scan lines and the data lines are disposed to cross each other with an insulating layer interposed therebetween. In other words, the extending direction of the scan line is not parallel to the extending direction of the data line. Preferably, the extending direction of the scan line is perpendicular to the extending direction of the data line. For the sake of conductivity, the scan lines and the data lines are generally made of metal. For example, in the present embodiment, the scan lines are distributed in each light emitting unit along the first direction D1 to correspond to each filter element, and the data lines are distributed in each light emitting unit along the second direction D2 to correspond to each filter element. Therefore, different light-emitting units can be driven by the scanning lines and the data lines respectively to provide different color effects.

Specifically, in the present embodiment, the coordinates of the pentagon formed by the image beam L2 in the color space are: r1 (0.685, 0.315), G1 (0.265, 0.690), G2 (0.210, 0.710), B1 (0.118, 0.087) and B2 (0.150, 0.060). The effective color gamut area of image beam L2 in CIE 1931 color space is 116.0%, 121.4%, 163.8% and 120.8% of the effective color gamut area in the conventional NTSC color space, the conventional Adobe color space, the conventional sRGB color space and the conventional DCI-P3 color space, respectively. On the other hand, the effective gamut area of the image beam L2 in the CIE 1976 color space is 130.1%, 127.9%, 149.2% and 118.8% of the effective gamut areas of the conventional NTSC color space, the conventional Adobe color space, the conventional sRGB color space and the conventional DCI-P3 color space, respectively.

FIG. 12 is a flowchart illustrating a display method of a display device according to an embodiment of the invention. Please refer to fig. 1, fig. 4, fig. 5, fig. 9 and fig. 12. The display method provided by the embodiment can be at least applied to the

display devices

100 and 100A shown in fig. 1 or fig. 5. The following description will be given by taking the display device 100 applied to fig. 1 as an example. In the present embodiment, first, step S300 is executed to drive the light emitting module 100 to emit the illumination light beam L1. Then, after the step S300, step S301 is executed to drive the light valve module 130 to allow a part of the illumination beam L1 to pass through, where the part of the illumination beam L1 to pass through can be determined by the driving element 120 or the light valve module 130, which is not limited in the present invention.

Next, after the step S301, step S302 is executed, in which a part of the illumination light beams L1 passes through the filter layer 140 to generate the display light beams L2, wherein the illumination light beams L1 pass through the first filter units F1 and the second filter units F2 of the filter layer 140 to generate a first light beam group L21 and a second light beam group L22 with different wavelengths. The image beam L2 is composed of a first beam group L21 and a second beam group L22. The image beam L2 includes five or six beams with different wavelengths and a full width at half maximum greater than 10 nm.

It should be noted that, in the present embodiment, when step S300 is executed, one of the following three steps may be further selected: the driving method includes (1) driving a part of the light emitting module 100 corresponding to the first filter element C1, the second filter element C2, and the third filter element C3 at the same time, (2) driving a part of the light emitting module 100 corresponding to the fourth filter element C4, the fifth filter element C5, and the sixth filter element C6 at the same time, or (3) driving a part of the light emitting module 100 corresponding to the first filter element C1 to the sixth filter element C6 at the same time.

Taking the display device 100A applied in fig. 5 as an example, the image light beam L2 includes five light beams with different wavelengths and a full width at half maximum greater than 10 nm. In step S300, one of the following three steps may be selected: the driving method includes (1) driving a part of the light emitting module 100A corresponding to the first filter element C1, the second filter element C2, and the third filter element C3 at the same time, (2) driving a part of the light emitting module 100A corresponding to the third filter element C3, the fourth filter element C4, and the fifth filter element C5 at the same time, or (3) driving a part of the light emitting module 100A corresponding to the first filter element C1 to the fifth filter element C5 at the same time. That is, the first to fifth filter elements C1 to C5 arranged in an H shape are used to drive the light emitting elements in a positive T shape, an inverted T shape, or an H shape.

In summary, in the display device and the display method thereof of the present invention, the light emitting module provides the illumination light beams to pass through the plurality of first filter units and the plurality of second filter units of the filter layer to generate the first light beam group and the second light beam group with different wavelengths, respectively. Therefore, the image light beams formed by the first light beam group and the second light beam group comprise at least five light beams with different wavelengths and the full width at half maximum of more than 10 nanometers, so that the color gamut range provided by the display can be enlarged, and the display effect is improved.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A display device adapted to provide an image beam, comprising:

a light-emitting module adapted to provide an illumination beam;

a driving element electrically connected to the light emitting module;

a light valve module configured on the transmission path of the illumination beam; and

a filter layer disposed on a transmission path of the illumination beam, the filter layer including a plurality of first filter units and a plurality of second filter units, wherein the illumination beam passes through the first filter units and the second filter units to generate a first beam set and a second beam set, respectively, the first beam set and the second beam set have different wavelengths, and the image beam is composed of the first beam set and the second beam set, the image beam includes at least five beams having different wavelengths and a full width at half maximum greater than 10 nm;

the light-emitting module comprises a plurality of first light-emitting units and a plurality of second light-emitting units, wherein the first light-emitting units and the second light-emitting units respectively provide a plurality of first sub-illuminating light beams and a plurality of second sub-illuminating light beams with different wavelengths, the first filter unit is arranged on a transmission path of the first sub-illuminating light beams, and the second filter unit is arranged on a transmission path of the second sub-illuminating light beams.

2. The display device according to claim 1, wherein each of the first filter units comprises a first filter element, a second filter element and a third filter element, each of the second filter units comprises a fourth filter element, a fifth filter element and a sixth filter element, the first beam set comprises a plurality of first sub-beams, a plurality of second sub-beams and a plurality of third sub-beams, the second beam set comprises a plurality of fourth sub-beams, a plurality of fifth sub-beams and a plurality of sixth sub-beams, each of the first sub-beams, each of the second sub-beams, each of the third sub-beams, each of the fourth sub-beams, each of the fifth sub-beams and each of the sixth sub-beams are green, blue, red, green, blue and red light beams, and each of the wavelengths of the first sub-beams, the second sub-beams, the third sub-beams, each of the fourth sub-beams, each of the fifth sub-beams and each of the sixth sub-beams are different from each other.

3. The display device according to claim 2, wherein the first filter units and the second filter units are arranged in an array and in a staggered manner in the filter layer.

4. The display apparatus according to claim 2, wherein the image beam has a hexagonal geometric shape in color space.

5. The display device according to claim 1, wherein each of the first filter units comprises a first filter element, a second filter element and a third filter element, each of the second filter units comprises a fourth filter element and a fifth filter element, the first beam set comprises a plurality of first sub-beams, a plurality of second sub-beams and a plurality of third sub-beams, the second beam set comprises a plurality of fourth sub-beams and a plurality of fifth sub-beams, each of the first sub-beams, each of the second sub-beams, each of the third sub-beams, each of the fourth sub-beams and each of the fifth sub-beams is a green, blue, red, green, blue light beam, respectively, and each of the fifth sub-beams has a different wavelength from each other.

6. The display apparatus of claim 5, wherein the filter layer comprises a plurality of first filter elements and a plurality of second filter elements sequentially arranged in a staggered manner in a first direction, a plurality of third filter elements sequentially arranged in the first direction, a plurality of fourth filter elements and a plurality of fifth filter elements sequentially arranged in the first direction, a plurality of first filter elements, a plurality of third filter elements and a plurality of fourth filter elements sequentially arranged in a staggered manner in a second direction perpendicular to the first direction, and a plurality of third filter elements staggered with the plurality of first filter elements, the plurality of second filter elements, the plurality of fourth filter elements and the plurality of fifth filter elements in the first direction.

7. The display apparatus according to claim 5, wherein the geometric shape defined by the image beam in the color space is a pentagon.

8. The display apparatus of claim 5, wherein each of the first sub-beams, each of the second sub-beams, each of the third sub-beams, each of the fourth sub-beams, and each of the fifth sub-beams has a wavelength of 537 nm, 473 nm, 621 nm, 529 nm, and 449 nm, respectively.

9. The display apparatus of claim 5, wherein full widths at half maximum of each of the first sub-beam, each of the second sub-beam, each of the third sub-beam, each of the fourth sub-beam and each of the fifth sub-beam are 36 nm, 14 nm, 18 nm, 40 nm and 18 nm, respectively.

10. The display device of claim 1, wherein the light emitting module is a liquid crystal display, a cathode ray tube display, a light emitting diode display, a plasma display, an organic light emitting diode display, or a field emission display.

11. The display device as claimed in claim 1, wherein the light emitting module comprises a light emitting layer and a color conversion layer disposed on the light emitting layer.

12. The display device according to claim 11, wherein the light emitting layer comprises a plurality of first light emitting elements and a plurality of second light emitting elements, the color conversion layer comprises a plurality of first color converters and a plurality of second color converters, and the first color converters and the second color converters are respectively disposed on the first light emitting elements and the second light emitting elements.

13. The display device according to claim 12, wherein the first light emitting elements are 473 nm wavelength leds, the second light emitting elements are 449 nm wavelength leds, the first color converters are adapted to convert the light beams provided by the first light emitting elements into a plurality of first sub-illumination beams, and the second color converters are adapted to convert the light beams provided by the second light emitting elements into a plurality of second sub-illumination beams.

14. A display method of a display device is suitable for providing an image beam, and is characterized by comprising the following steps:

driving a light-emitting module to emit an illumination beam;

driving a light valve module to pass a portion of the illumination beam; and

one part of the illuminating light beam is transmitted through a filter layer to generate a display light beam, wherein the illuminating light beam passes through a plurality of first filter units and a plurality of second filter units of the filter layer to generate a first light beam group and a second light beam group with different wavelengths, the image light beam consists of the first light beam group and the second light beam group, and the image light beam comprises at least five light beams with different wavelengths and the full width at half maximum of more than 10 nanometers;

15. The method as claimed in claim 14, wherein the filter layer comprises a plurality of first filter elements, a plurality of second filter elements, a plurality of third filter elements, a plurality of fourth filter elements, a plurality of fifth filter elements and a plurality of sixth filter elements, and the method for driving the light emitting module to emit the illumination beam further comprises one of the following steps:

simultaneously driving one part of the light emitting module corresponding to the first filter elements, the second filter elements and the third filter elements;

correspondingly driving a part of the light emitting module of the fourth filter elements, the fifth filter elements and the sixth filter elements at the same time; or

And correspondingly driving the first filter elements to a part of the light-emitting module of the sixth filter elements.

16. The method as claimed in claim 14, wherein the filter layer comprises a plurality of first filter elements, a plurality of second filter elements, a plurality of third filter elements, a plurality of fourth filter elements, and a plurality of fifth filter elements, and the method for driving the light emitting module to emit the illumination beam further comprises one of the following steps:

correspondingly driving a part of the light emitting module of the first filter elements, the second filter elements and the third filter elements at the same time;

correspondingly driving one part of the light-emitting module of the third filter elements, the fourth filter elements and the fifth filter elements at the same time; or

And correspondingly driving the first filter elements to a part of the light-emitting module of the fifth filter elements.