CN108828834A - Display panel - Google Patents

Abstract

The invention discloses a display panel, which comprises a first substrate, a second substrate, a color conversion layer, a first shading layer, a first reflection layer, at least three pixel units and a display medium layer, wherein the first substrate and the second substrate are correspondingly arranged. The display medium layer is arranged between the first substrate and the second substrate. The color conversion layer comprises at least three color conversion units, and the at least three color conversion units correspond to the at least three pixel units. The first light shielding layer is provided with a plurality of first light shielding units which respectively separate at least three color conversion units, and the first light shielding layer extends beyond the color conversion layers in the normal direction of the first substrate. The first reflecting layer is provided with a plurality of first reflecting units which are respectively arranged on at least one side of the at least three color conversion units.

Description

display panel

technical field

The present invention relates to a display panel, and in particular to a display panel with better display quality.

Background technique

With the advancement of science and technology, electronic display devices with display panels have been widely used in daily necessities, such as smart phones, tablet computers, notebook computers, monitors or televisions, etc., which are indispensable necessities for modern people.

When this type of electronic display device gradually becomes the mainstream of the market, how to improve the display quality of the display panel and the light extraction efficiency of the light source has become one of the goals that the relevant industry is committed to.

Contents of the invention

The invention relates to a display panel, which can further improve the display quality of the display panel and the light extraction efficiency of the light source by arranging a light-shielding layer and a reflective layer on the first substrate.

According to an aspect of the present invention, a display panel is provided. The display panel includes a first substrate, a second substrate, a color conversion layer, a first light-shielding layer, a first reflection layer, at least three pixel units and a display medium layer. The second substrate is arranged corresponding to the first substrate. The display medium layer is disposed between the first substrate and the second substrate. The color conversion layer is disposed on the inner surface of the first substrate, and the color conversion layer includes at least three color conversion units. The first light shielding layer has a plurality of first light shielding units, these first light shielding units are arranged on the inner surface of the first substrate, these first light shielding units are respectively separated from at least three color conversion units, and the first light shielding layer is located on the first light shielding layer. A substrate extends beyond the color conversion layer in a direction normal to the substrate. The first reflection layer has a plurality of first reflection units, these first reflection units are arranged on the inner surface of the first substrate, and these first reflection units are respectively arranged on at least one side of at least three color conversion units. At least three pixel units are disposed on the inner surface of the second substrate, wherein at least three color conversion units correspond to at least three pixel units.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 shows a partial top view of a display panel according to an embodiment of the invention.

FIG. 2 is a cross-sectional view of a first substrate of a display panel according to an embodiment of the invention.

FIG. 3 is a cross-sectional view of a first substrate of a display panel according to another embodiment of the invention.

4A-4B are cross-sectional views of a display panel according to an embodiment of the invention.

5A-5D are cross-sectional views of a display panel according to another embodiment of the present invention.

Among them, reference signs

1, 2, 10, 20, 11, 12, 21, 22: display panel

110: first substrate

111: Color conversion layer

111B, 111G, 111R: color conversion unit

112: the first shading layer

112S1, 112S2: the first shading unit

112A: the first shading structure of the first shading unit

112B: the second shading structure of the first shading unit

113: first reflective layer

113R1, 113R2: first reflection unit

114: flat layer

115: Polarizing layer

120: second substrate

121: self-luminous layer

121L: self-luminous unit

122: second light-shielding layer

122S1, 122S2: Second shading unit

123: second reflective layer

123R1, 123R2: second reflection unit

130: Backlight module

140: Display medium layer

P: pixel unit

T: active component

H1: the height of the first light-shielding structure along the normal direction of the first substrate

H2: the height of the first reflection unit along the normal direction of the first substrate

H3: the height of the second light-shielding structure along the normal direction of the first substrate

H4: the height of the color conversion unit along the normal direction of the first substrate

H5: The overall height of the first light-shielding structure, the first reflection unit and the second light-shielding structure along the normal direction of the first substrate

H6: the height of the first reflection unit along the normal direction of the first substrate

H7: the height of the first shading unit along the normal direction of the first substrate

H8: Thickness of the first reflection unit

L1: first beam

L2: second beam

L3: Third Beam

P1: the first pixel unit

P2: the second pixel unit

P3: The third pixel unit

Q1: Quantum dot materials used to generate red light wavelengths

Q2: Quantum dot materials used to generate green light wavelengths

BL: light

GL: Green light

RL: red light

PA: Pixel Array

DL: data line

PE: pixel electrode

SL: scan line

Detailed ways

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

Various embodiments are provided below for detailed description. The present invention does not show all possible embodiments, and other implementation aspects not proposed in the present invention are also applicable. Furthermore, the size ratios in the drawings are not drawn to the same proportions as the actual products. Therefore, the specification and illustrations are only used to describe the embodiments, not to limit the protection scope of the present invention. In addition, some components are omitted from the drawings in the embodiments to clearly show the technical characteristics of the present invention. The same/similar symbols represent the same/similar components or steps in the following description.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same elements. 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 Intermediate 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 connection. Furthermore, "electrically connected" or "coupled" may mean that other elements exist between two elements.

As used herein, "about," "approximately," or "substantially" includes stated values and averages within acceptable deviations from a particular value as determined by one of ordinary skill in the art, taking into account the measurements in question and relative A specific amount of measurement-related error (ie, a limitation of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value. Furthermore, the terms "about", "approximately" or "substantially" used herein can choose a more acceptable deviation range or standard deviation according to optical properties, etching properties or other properties, and it is not necessary to use one standard deviation to apply to all properties .

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 to have meanings consistent with their meanings in the context of the relevant art and the present invention, and will not be interpreted as idealized or excessive formal meaning, unless expressly so defined herein.

Please refer to FIG. 1 , which shows a partial top view of a display panel 1 according to an embodiment of the present invention. The display panel 1 includes a first substrate 110, wherein the first substrate 110 is the side close to the viewer (for example: human eyes), for example: the viewing angle shown in the figure (for example: viewing angle from the Z-axis direction), may be The view angle (for example: the view angle from the Z-axis direction) of the viewer (for example: human eyes) when viewing the display panel 1 .

The display panel 1 includes a pixel array PA, and the pixel array PA may be composed of a plurality of pixel units P arranged in an array. Each pixel unit P includes at least one active device T and at least one pixel electrode PE electrically connected to the at least one active device T. The pixel array PA may further include a plurality of data lines DL, a plurality of scan lines SL, or other suitable lines, and each pixel unit P may be electrically connected to a corresponding data line DL and a corresponding scan line SL through an active element T, To receive the driving signal, and then drive the pixel array PA.

Here, the display panel 1 further includes a first light-shielding layer 112 disposed on the inner surface of the first substrate 110 . The first light-shielding layer 112 is, for example, a black matrix, so as to prevent adjacent pixel units P from mixing light and reducing color purity. The first light-shielding layer 112 may include a plurality of first light-shielding units (for example: marked in FIGS. The first shading unit may define a pixel unit P (or may be called a sub-pixel unit). In some embodiments, the pixel unit P can be a single area or at least two areas, which can be designed or selected according to requirements.

Please refer to FIG. 2 , which shows a cross-sectional view of one side of the first substrate 110 of the display panel 1 according to an embodiment of the present invention. The display panel 1 includes a color conversion layer 111 disposed on the inner surface of the first substrate 110 . The color conversion layer 111 may include at least three color conversion units 111R, 111G and 111B as an example, but not limited thereto. The color converting units 111R, 111G, and 111B may correspond one-to-one to a pixel unit P as shown in FIG. 1 , but is not limited thereto. As shown in FIG. 2 , it shows that the color converting unit 111R corresponds to the first pixel unit P1.

The color conversion units 111R, 111G, and 111B may have single-layer or multi-layer photoluminescence (photoluminescence, PL) materials, and the photoluminescence materials may include fluorescent (phosphor) materials, quantum dot (quantum dot, QD) materials , perovskite material, or other suitable photoluminescent materials. In an embodiment, the color conversion unit 111R may include, for example, quantum dot material Q1 for generating red light wavelength, the color conversion unit 111G may include quantum dot material Q2 for, for example, green light wavelength, and the color conversion unit 111B may, for example, Including a transparent photoresist or a transparent planar layer, the color conversion unit 111B may not need to be doped with any quantum dot material, but the invention is not limited thereto. For example, when the light BL emitted by the light source (for example: backlight module) is blue light, the color conversion unit 111R can convert the wavelength of the blue light to the wavelength of the red light, and the color conversion unit 111G can convert the wavelength of the blue light to green. The wavelength of the light, and the color conversion unit 111B can directly transmit the light BL. Therefore, the light passing through the color conversion units 111R, 111G, and 111B is red light, green light, and blue light, respectively. In some embodiments, if the color conversion unit 111B can include, for example, a material (not shown) for producing blue quantum dots, the light BL emitted by the light source (for example: backlight module) can be ultraviolet light, and the rest The color conversion unit (eg, the color conversion unit 111R or the color conversion unit 111G) can also convert the wavelength of the ultraviolet light into the wavelength of the corresponding color (eg, red light or green light).

As mentioned above, the first light shielding layer 112 of the display panel 1 further includes a plurality of first light shielding units 112S1. The first light shielding unit 112S1 is disposed on the inner surface of the first substrate 110 . In FIG. 2 , a part of the first light shielding unit 112S1 substantially extending along the Y axis is shown. Of course, other first light shielding units 112S1 substantially extending along the Y-axis and other substantially extending along the X-axis are further included in places not shown in the figure. These first light-shielding units 112S1 separate the color conversion units 111R, 111G and 111B respectively to prevent light mixing. For example, the first light-shielding layer 112 extends beyond the color conversion layer 111 in the normal direction of the first substrate 110 (for example, the direction of the Z axis), so as to avoid the light that should be incident on a specific color conversion unit (for example, should be incident on the color conversion unit). The light entering the color conversion unit 111R) is incident toward other color conversion units (eg, the color conversion units 111G and/or 111B).

The display panel 1 may further include a first reflective layer 113 . The first reflective layer 113 can be a single-layer or multi-layer structure, and its material includes metal, alloy, or other suitable reflective materials. In an embodiment, the first reflective layer 113 may have a plurality of first reflective units 113R1 , and the first reflective units 113R1 are disposed on the inner surface of the first substrate 110 . The first reflection units 113R1 are respectively disposed on at least one side of the color conversion units 111R, 111G and 111B. In one embodiment, the first reflection unit 113R1 may substantially extend along the X-axis or the Y-axis. In FIG. 2 , a part of the first reflection unit 113R1 substantially extending along the Y axis is shown. Certainly, other first reflection units 113R1 substantially extending along the Y-axis and other substantially extending along the X-axis may be further included in places not shown in the figure. Therefore, every two rows and every two columns of the first reflective units 113R1 may be located around at least a part of at least one of the color conversion units 111R, 111G or 111B on the X-Y plane. Preferably, the first reflection unit 113R1 may be located around at least one of the color conversion units 111R, 111G or 111B, but is not limited thereto.

By disposing a plurality of first reflection units 113R1 on at least one side of the color conversion units 111R, 111G, and 111B respectively, it is possible to avoid light rays (for example, including light sources ( For example: the light BL of the backlight module) and/or the converted light (for example: red light, green light and/or blue light) is absorbed to reduce the light output, so as to further improve the light output efficiency.

In one embodiment, the color conversion layer 111 substantially does not extend beyond the first reflective layer 113 in the normal direction of the first substrate 110 (for example, the direction of the Z axis), so as not to reduce the amount of light output.

In an embodiment, each first light shielding unit 112S1 may include a first light shielding structure 112A and a second light shielding structure 112B. Each first reflective unit 113R1 is substantially located between the first light shielding structure 112A and the second light shielding structure 112B along the normal direction of the first substrate 110 (for example, the direction of the Z axis), and the first light shielding structure 112A is substantially along the The normal direction of the first substrate 110 is located between the first substrate 110 and the first reflection unit 113R1 . For example, the direction from the first substrate 110 toward the negative Z-axis can be the first light-shielding structure 112A, the first reflection unit 113R1 and the second light-shielding structure 112B in sequence. Viewed from another aspect, the first reflective unit 113R1 is sandwiched between the first light-shielding structure 112A and the second light-shielding structure 112B, and at least a part of the first reflective unit 113R1 overlaps with the first light-shielding structure 112A and the first reflective unit 113R1 It overlaps with at least a part of the second light-shielding structure 112B.

Taking the color conversion unit 111R corresponding to the first pixel unit P1 as an example, the first light-shielding structure 112A can also preferably surround the color conversion unit 111R, but it is not limited thereto. Compared with the display panel without the first light-shielding structure 112A (for example, the first reflective unit 113R1 is in direct contact with the inner surface of the first substrate 110 ), the arrangement of the first light-shielding structure 112A can improve the contrast ratio. Furthermore, since the first reflective unit 113R1 directly contacts the inner surface of the first substrate 110 in the display panel without the first light-shielding structure 112A, the first reflective unit 113R1 tends to reflect light incident from the outside and reduce contrast.

In one embodiment, the display panel 1 may optionally further include at least one of a flat layer 114 and a polarizing layer 115 (for example, a wire grid polarizing structure), but is not limited thereto. In this embodiment, the display panel 1 further includes a flat layer 114 and a polarizing layer 115 as an example, but it is not limited thereto. For example, the flat layer 114 can cover the color conversion layer 111 , the first light shielding layer 112 and the first reflective layer 113 . The polarizing layer 115 is, for example, a wire grid polarizing structure having a plurality of wire grids, any two of which are substantially parallel and have gaps. The color converting layer 111 is located between the polarizing layer 115 and the first substrate 110 . In some embodiments, a film layer can be selectively provided between the polarizing layer 115 and the color conversion layer 111, for example: the color conversion layer 111 is located between the polarizing layer 115 and the first substrate 110, and can selectively exist or not exist flat. Layer 114. Taking the color conversion unit 111R corresponding to the first pixel unit P1 as an example, when the light BL passes through the flat layer 114, the first light beam L1 will be absorbed by the second light shielding structure 112B, and the second light beam L2 can enter the color conversion unit In 111R, to excite the quantum dot material Q1, wherein the angle between the first light beam L1 and the normal direction perpendicular to the first substrate 110 is greater than the angle between the second light beam L2 and the normal direction perpendicular to the first substrate 110, the detailed diagram can refer to The first light beam L1 and the second light beam L2 shown in FIG. 5A . When the second light beam L2 enters the color conversion unit 111R, the second light beam L2 towards the side of the color conversion unit 111R will be further reflected by the first reflection unit 113R1 to excite other quantum dot materials Q1. In addition, the third light beam L3 excited by the quantum dot material Q1 can also be reflected by the first reflection unit 113R1 . Therefore, the first reflective units 113R1 in every two rows and every two columns on the X-Y plane may preferably surround the color conversion unit 111R and form a reflective cavity around the color conversion unit 111R, thereby To further reflect and concentrate light to improve light efficiency.

As shown in FIG. 2 , the height (or thickness) of the first light-shielding structure 112A substantially along the normal direction of the first substrate 110 (for example, the direction of the Z axis) is H1, and the first reflective unit 113R1 is substantially along the first substrate 110. The height (or thickness) of the normal direction of a substrate 110 (for example, the direction of the Z axis) is H2, and the second light-shielding structure 112B is substantially along the normal direction of the first substrate 110 (for example, the direction of the Z axis). The height (or thickness) is H3, the height (or thickness) of the color conversion units 111R, 111G, and 111B substantially along the normal direction of the first substrate 110 (for example: the direction of the Z axis) is H4, the second The overall height (or thickness) of the light-shielding structure 112A, the first reflective unit 113R1 and the second light-shielding structure 112B substantially along the normal direction of the first substrate 110 (eg, the direction of the Z axis) is H5. In one embodiment, H1 is less than about 1 micron, such as about 0.5 micron, which can increase the contrast. In one embodiment, H2 is greater than about 2 microns and less than about 7 microns, which can be changed depending on the height (or called thickness, eg: H4 ) of the color conversion units 111R, 111G, and 111B. In one embodiment, H3 is greater than about 4 microns and less than about 9 microns. When H4 is substantially equal to H1 plus H2 (for example: H4=H1+H2), the first light shielding layer 112 exceeds the color conversion layer 111 in the normal direction of the first substrate 110 (for example: the direction of the Z axis). The height (or thickness) may be between about 4 microns and about 9 microns. In addition, the height (for example: H3 ) of the second light shielding structure 112B is greater than the height (for example: H1 ) of the first light shielding structure 112A. In one embodiment, the value of H1 plus H2 may be greater than or substantially equal to H4 (for example: H1+H2≧H4), for example: the color conversion layer 111 is in the normal direction of the first substrate 110 (for example: Z-axis Direction) substantially does not extend beyond the first reflective layer 113, which can avoid reducing the light output. In one embodiment, the height of H5 is relatively high, such as about 12 microns. If the H5 is greater than about 12 microns, the amount of light output may be reduced; if the H5 is less than about 12 microns, it may cause light mixing and reduce color saturation.

Please refer to FIG. 3 , which shows a cross-sectional view of one side of the first substrate 110 of the display panel 2 according to another embodiment of the present invention. At least one difference between the display panel 2 of this embodiment and the display panel 1 of the embodiment shown in FIG. 2 lies in the configuration of the first light-shielding layer 112 and the first reflective layer 113 . For the rest of the same or similar parts, please refer to the description of the above-mentioned embodiments, and will not be repeated here.

In an embodiment, the first light shielding layer 112 may have a plurality of first light shielding units 112S2 , and the first light shielding units 112S2 are disposed on the inner surface of the first substrate 110 . In FIG. 3 , a part of the first light shielding unit 112S2 substantially extending along the Y axis is shown. Of course, other first light shielding units 112S2 substantially extending along the Y-axis and other substantially extending along the X-axis are further included in places not shown in the figure. These first light shielding units 112S2 separate the color converting units 111R, 111G and 111B respectively to prevent light mixing. The first light-shielding layer 112 extends beyond the color conversion layer 111 in the normal direction of the first substrate 110 (for example, the direction of the Z axis), so as to avoid light that should be injected into a specific color conversion unit (for example, should be injected into the color conversion unit. 111R) is incident toward other color conversion units (for example, the color conversion unit 111G or 111B).

In an embodiment, the first reflective layer 113 may have a plurality of first reflective units 113R2 , and the first reflective units 113R2 are disposed on the inner surface of the first substrate 110 . The first reflection units 113R2 are respectively disposed on at least one side of the color conversion units 111R, 111G and 111B. In one embodiment, each first reflection unit 113R2 may be located around at least a portion of at least one of the color conversion units 111R, 111G or 111B. Preferably, the first reflection unit 113R2 may be located around at least one of the color conversion units 111R, 111G or 111B, but is not limited thereto.

In one embodiment, each first reflection unit 113R2 may be located between the first light shielding unit 112S2 and at least one of the color conversion units 111R, 111G or 111B. Taking the color converting unit 111R corresponding to the first pixel unit P1 as an example, the first pixel unit P1 may be the first light shielding unit 112S2 , the first reflecting unit 113R2 and the color converting unit 111R in sequence from outside to inside. From another perspective, the first reflection unit 113R2 is located between the side of the color conversion unit 111R and the side of the first light shielding unit 112S2 . In some embodiments, the first light shielding unit 112S2 is in direct contact with the inner surface of the first substrate 110 . For example, the first shading unit 112S2 is directly in contact with the inner surface of the first substrate 110, and there is no film layer on the inner surface; or, there is a film layer on the inner surface of the first substrate 110, and the first shading unit 112S2 directly contacts the first substrate 110. The film layers on the inner surfaces are in contact.

By disposing a plurality of first reflection units 113R2 on at least one side of the color conversion units 111R, 111G, and 111B respectively, it is possible to prevent the light incident on the sides of the color conversion units 111R, 111G, and 111B from being absorbed, thereby reducing the light output. Reduced to further improve the light extraction efficiency.

In one embodiment, the color conversion layer 111 substantially does not extend beyond the first reflective layer 113 in the normal direction of the first substrate 110 (for example, the direction of the Z axis), so as not to reduce the amount of light output.

In one embodiment, the display panel 2 may optionally further include a flat layer 114 and a polarizing layer 115 . The configuration of the flat layer 114 and the polarizing layer 115 (for example, a wire grid polarizing structure) is similar to that of the display panel 1 shown in FIG. 2 , and reference may be made to the foregoing embodiments, and no further description is repeated here. Taking the color conversion unit 111R corresponding to the first pixel unit P1 as an example, when the light BL passes through the polarizing layer 115 (for example: a wire grid polarizing structure) and the flat layer 114, the first light beam L1 will be blocked by the first light shielding unit 112S2. absorption, and the second light beam L2 can be incident into the color conversion unit 111R to excite the quantum dot material Q1. When the second light beam L2 enters the color conversion unit 111R, the second light beam L2 towards the side of the color conversion unit 111R will be further reflected by the first reflection unit 113R2 to excite other quantum dot materials Q1. In addition, the third light beam L3 excited by the quantum dot material Q1 can also be reflected by the first reflection unit 113R2 . Therefore, each first reflection unit 113R2 preferably surrounds the color conversion unit 111R and forms a reflection cavity around the color conversion unit 111R, thereby further reflecting and concentrating light to improve light output efficiency.

As shown in FIG. 3 , the height (or thickness) of the first reflection unit 113R2 substantially along the normal direction of the first substrate 110 (for example, the direction of the Z axis) is H6, and the first light shielding unit 112S2 is substantially along the first substrate 110. A height (or thickness) of the substrate 110 in the normal direction (for example, the direction of the Z axis) is H7, and a size (or width) of the first reflection unit 113R2 is H8. In one embodiment, H6 is greater than about 3 microns and less than about 8 microns. In one embodiment, the height (or thickness) of the color conversion layer 111 in the normal direction of the first substrate 110 (for example, the direction of the Z axis) does not substantially extend beyond the height (or thickness) of the first reflective layer 113 . is called thickness), so the height (or thickness) of the color conversion units 111R, 111G, and 111B substantially along the normal direction of the first substrate 110 (for example, the direction of the Z axis) is not greater than that of the first reflective layer 113 on the first substrate 113. A height (or thickness) H6 of the substrate 110 in the normal direction (for example, the direction of the Z axis). In one embodiment, the height (or thickness) of H7 is relatively high, for example, about 12 microns. If H7 is larger than about 12 microns, the amount of light output may be reduced; if H7 is smaller than about 12 microns, it may cause light mixing and reduce color saturation. In one embodiment, the value of H7 minus H6 is greater than about 4 microns and less than about 9 microns (eg, 4 microns<(H7−H6)<9 microns). When the height (or thickness) of the color conversion units 111R, 111G, and 111B along the normal direction of the first substrate 110 (for example, the direction of the Z axis) is substantially equal to H6, the first light shielding layer 112 is The height of the normal direction of the first substrate 110 (for example, the direction of the Z axis) beyond the color conversion layer 111 is between about 4 microns and about 9 microns. In one embodiment, H8 is less than about 1 micron (for example: H8<1 micron), which can prevent excessive external light (for example: light entering from the outer surface of the first substrate 110) from being reflected by the first reflection unit 113R2 to reduce the contrast.

Please refer to FIGS. 4A-4B , which illustrate cross-sectional views of display panels 10 and 20 according to some embodiments of the present invention. In the embodiment shown in FIGS. 4A-4B , the display panels 10 and 20 can be non-self-illuminating displays, such as liquid crystal displays, but are not limited thereto.

As shown in FIGS. 4A-4B , the display panels 10 and 20 include a first substrate 110 , a second substrate 120 and a display medium layer 140 . The second substrate 120 is disposed corresponding to the first substrate 110 . The display medium layer 140 is disposed between the first substrate 110 and the second substrate 120 , and the display medium layer 140 may be, for example, a liquid crystal layer, but is not limited thereto. In other embodiments, the material of the display medium layer 140 may include electrophoretic materials, electrowetting materials, electrodust materials, or other suitable non-self-luminous materials. Although not shown in FIGS. 4A-4B , the display panels 10 and 20 may further include a pixel array PA as shown in FIG. 1 , and the pixel array PA includes at least three pixel units, such as a first pixel unit P1, a second pixel unit P2 and the third pixel unit P3 , these pixel units (for example: P1 ˜ P3 ) are disposed on the inner surface of the second substrate 120 .

In one embodiment, the display panels 10 and 20 may further include a backlight module 130 disposed under the second substrate 120 for emitting light BL. Although the backlight module 130 shown in FIGS. 4A-4B is a direct type backlight module disposed under the second substrate 120 , the present invention is not limited thereto. In other embodiments, the backlight module 130 can be an edge-lit backlight module, for example, it can be arranged on the side of the second substrate 120, or the light source of the backlight module 130 can be arranged on the optical layer (for example: diffuse light layer or light guiding layer, not shown), and the optical layer (for example: light diffusing layer or light guiding layer, not shown) is disposed under the second substrate 120 . In addition, the material for making the light source of the backlight module can be organic material, inorganic material, perovskite material, or other suitable materials, or a combination of the foregoing, and/or is not limited to the size of a single light source (for example: cm ( mm), micrometers (μm), nanometers (nm), or other suitable dimensions).

4A-4B completely illustrate at least three pixel units, including a first pixel unit P1 , a second pixel unit P2 and a third pixel unit P3 . The first substrate 110, the color conversion layer 111, the flat layer 114, and the polarizing layer 115 (for example: the wire grid polarizing structure) have been described in the embodiments of FIG. 2 and FIG. 3, and they have similar configurations, and will not be repeated here. describe. In addition, in one embodiment, the display panels 10 and 20 may further include another polarizing layer (such as another wire grid polarizing structure, not shown) disposed on the second substrate 120 , but is not limited thereto. In some embodiments, another polarizing layer (such as another wire grid polarizing structure, not shown) can be selectively disposed between the second substrate 120 and the display medium layer 140 or on the outer surface of the second substrate 120 (or can be referred to as between the second substrate 120 and the backlight module 130). In other embodiments, another polarizing layer may be an externally attached polarizer, but the present invention is not limited thereto.

In one embodiment, the color conversion unit 111R corresponds to the first pixel unit P1 , the color conversion unit 111G corresponds to the second pixel unit P2 , and the color conversion unit 111B corresponds to the third pixel unit P3 . When the light BL emitted by the backlight module 130 is blue light, the color conversion unit 111R can convert the wavelength of the blue light to the wavelength of the red light, and the color conversion unit 111G can convert the wavelength of the blue light to the wavelength of the green light. The conversion unit 111B can directly transmit the light BL, so that the first pixel unit P1 emits red light RL, the second pixel unit P2 emits green light GL, and the third pixel unit P3 emits blue light BL. When the light BL emitted by the backlight module 130 is ultraviolet light, the color conversion unit 111R may convert the wavelength of the ultraviolet light into a wavelength of red light, and the color conversion unit 111G may convert the wavelength of ultraviolet light into a wavelength of green light. , and the color conversion unit 111B can convert the wavelength of ultraviolet light into the wavelength of blue light, so that the first pixel unit P1 emits red light RL, the second pixel unit P2 emits green light GL, and the third pixel unit P3 emits blue light BL .

The configurations of the first light-shielding layer 112 and the first reflective layer 113 of the display panel 10 in FIG. 4A are similar to those of the various embodiments in FIG. 2 , and reference can be made to the foregoing embodiments. As shown in FIG. 4A, by disposing a plurality of first reflecting units 113R1 on at least one side of the color conversion units 111R, 111G, and 111B, for example, disposing the first reflecting units 113R1 on the first light shielding structure 112A and the second light-shielding structure 112A. Preferably, the light-shielding structures 112B can be located around the color conversion units 111R, 111G, and 111B, which can further reflect and concentrate light to improve light extraction efficiency.

Moreover, by sequentially disposing the first light-shielding structure 112A, the first reflection unit 113R1 and the second light-shielding structure 112B on the inner surface of the first substrate 110, and the overall height (or called thickness, for example: as shown in FIG. 2 H5 shown) is relatively high, so it can avoid the light that should be incident on a specific color conversion unit (for example, the light that should be incident on the color conversion unit 111R) incident toward other color conversion units (for example, the color conversion unit 111G or 111B), resulting in Mixed light occurs and the color saturation is reduced. Moreover, the arrangement of the first light-shielding structure 112A can prevent external light from being reflected by the first reflection unit 113R1 to reduce contrast.

Please refer to FIG. 4B , at least one difference from the display panel 10 of the embodiment shown in FIG. 4A is that the first light-shielding layer 112 and the first reflective layer 113 of the display panel 20 in FIG. 4B are similar to the configurations of the embodiment in FIG. 3 . For the rest of the same or similar parts, reference may be made to the above-mentioned embodiments, which will not be repeated here.

By making a plurality of first reflection units 113R2 respectively disposed on at least one side of the color conversion units 111R, 111G, and 111B, for example, each first reflection unit 113R2 is disposed on the first shading unit 112S2 and one of the color conversion units 111R , 111G or 111B can further reflect and concentrate light to improve light extraction efficiency.

Furthermore, the height (or called thickness, for example: H7 shown in FIG. 3 ) of the first shading unit 112S2 is relatively high, so it can avoid the light that should be injected into the specific color conversion unit (for example, the light that should be injected into the color conversion unit 111R) is incident toward other color conversion units (such as the color conversion unit 111G or 111B), resulting in light mixing and reduced color saturation. Moreover, the size (or called width, for example: H8 shown in FIG. 3 ) of the first reflective unit 113R2 is relatively thin, so as to prevent too much external light from being reflected by the first reflective unit 113R2 to reduce contrast.

Please refer to FIGS. 5A-5D , which illustrate cross-sectional views of display panels 11 , 12 , 21 and 22 according to other embodiments of the present invention. In the embodiment shown in FIGS. 5A to 5D , the display panels 11, 12, 21 and 22 can be self-luminous displays, for example, equipped with electroluminescence (Electro Luminescence, EL) elements (such as: organic EL elements, inorganic EL elements, etc.). elements, perovskite light-emitting elements, quantum dot light-emitting elements, or other suitable electroluminescent materials) displays or other suitable self-luminous displays. In some embodiments, the size of a single electroluminescent element (for example, centimeter (mm), micrometer (μm), nanometer (nm), or other suitable dimensions) is also not limited.

As shown in FIGS. 5A to 5D , the display panels 11 , 12 , 21 and 22 include a first substrate 110 , a second substrate 120 and a display medium layer 140 . The second substrate 120 is disposed corresponding to the first substrate 110 . The display medium layer 140 is disposed between the first substrate 110 and the second substrate 120 , and the display medium layer 140 may include a self-luminous layer 121 . Although not shown in FIGS. 5A-5D , the display panels 11, 12, 21, and 22 may further include the pixel array PA shown in FIG. 1, and the pixel array PA includes at least three pixel units (or at least three sub-pixels). units), such as the first pixel unit P1 , the second pixel unit P2 and the third pixel unit P3 , these pixel units are disposed on the inner surface of the second substrate 120 . In some embodiments, each pixel unit can be at least one area, for example: one area, two areas, or other suitable number of areas.

As shown in FIGS. 5A to 5D , the self-luminous layer 121 is disposed on the inner surface of the second substrate 120 . The self-luminous layer 121 includes at least three self-luminous units 121L, and these self-luminous units 121L correspond to at least three pixel units P1-P3. These self-illuminating units 121L may correspond one-to-one to the first pixel unit P1 , the second pixel unit P2 and the third pixel unit P3 . In one embodiment, each self-luminous unit 121L includes a single-layer or multi-layer structure, and contains light-emitting materials, such as: organic light-emitting materials, micro-light-emitting materials, quantum dot materials, perovskite materials, or other suitable materials. materials, or the aforementioned composition. Each self-illuminating unit 121L may correspond to a pixel unit thereof and emit light toward the color conversion unit. For example, the self-illuminating unit 121L corresponding to the second pixel unit P2 can emit light toward the color conversion unit 111G.

5A to 5D completely illustrate at least three pixel units, including a first pixel unit P1 , a second pixel unit P2 and a third pixel unit P3 . The first substrate 110, the color conversion layer 111, the flat layer 114, and the polarizing layer 115 (for example: the wire grid polarizing structure) have been described in the embodiments of FIG. 2 and FIG. 3, and they have similar configurations, and will not be repeated here. describe. In addition, in some embodiments, at least one of the display panels 11, 12, 21, and 22 may optionally not include another polarizing layer (for example: another wire grid polarizing structure, not shown), or may be further designed according to requirements. Optionally include another polarizing layer (for example: another wire grid polarizing structure or polarizer, not shown).

In one embodiment, the color conversion unit 111R corresponds to the first pixel unit P1 , the color conversion unit 111G corresponds to the second pixel unit P2 , and the color conversion unit 111B corresponds to the third pixel unit P3 . When each self-luminous unit 121L emits blue light, the color conversion unit 111R can convert the wavelength of blue light into a wavelength of red light, and the color conversion unit 111G can convert the wavelength of blue light into a wavelength of green light, and the color conversion unit 111G can convert the wavelength of blue light into a wavelength of green light. 111B can directly penetrate the light BL or purify the wavelength of the light BL to blue light, so that the first pixel unit P1 emits red light RL, the second pixel unit P2 emits green light GL, and the third pixel unit P3 emits blue light The light BL. When each self-emitting unit 121L emits ultraviolet light, the color conversion unit 111R can convert the wavelength of ultraviolet light into a wavelength of red light, and the color conversion unit 111G can convert the wavelength of ultraviolet light into a wavelength of green light, and The color conversion unit 111B can convert the wavelength of the ultraviolet light into the wavelength of blue light, and then make the first pixel unit P1 emit red light RL, the second pixel unit P2 emit green light GL, and the third pixel unit P3 emit blue light BL.

The configuration of the first light-shielding layer 112 and the first reflective layer 113 of the display panel 11 in FIG. 5A is similar to the configuration of the embodiment in FIG. 2 and reference can be made to the foregoing embodiments. Please refer to FIG. 5A , the display panel 11 further includes a second light shielding layer 122 . In an embodiment, the second light shielding layer 122 may have a plurality of second light shielding units 122S1 , and the second light shielding units 122S1 are disposed on the inner surface of the second substrate 120 . In FIG. 5A , a portion of the second light shielding unit 122S1 substantially extending along the Y axis is shown. Of course, other second light shielding units 122S1 substantially extending along the Y-axis and other substantially extending along the X-axis are further included in places not shown in the figure. These second light-shielding units 122S1 are respectively separated from the self-emitting unit 121L. In one embodiment, the second light-shielding layer 122 extends beyond the self-luminous layer 121 in the normal direction of the second substrate 120 (for example, the direction of the Z axis), so as to prevent the light that should be incident on a specific pixel unit (for example, should be The light incident on the second pixel unit P2) enters the adjacent pixel unit (for example, the first pixel unit P1 or the third pixel unit P3).

In one embodiment, the display panel 11 may further include a second reflective layer 123 . The second reflective layer 123 can be a single-layer or multi-layer structure, and its material includes metal, alloy, or other suitable reflective materials. In an embodiment, the second reflective layer 123 may have a plurality of second reflective units 123R1 , and the second reflective units 123R1 are disposed on the inner surface of the second substrate 120 . The second reflecting units 123R1 are respectively disposed on at least one side of the self-emitting unit 121L. In one embodiment, the second reflection unit 123R1 may substantially extend along the X-axis or the Y-axis. In FIG. 5A , a portion of the second reflective unit 123R1 substantially extending along the Y axis is shown. Of course, other second reflection units 123R1 substantially extending along the Y-axis and other substantially extending along the X-axis may be further included in places not shown in the figure. Therefore, every two rows and every two columns of the second reflective units 123R1 on the X-Y plane may be located around at least a part of at least one of the self-illuminating units 121L. Preferably, the second reflective unit 123R1 may be located around at least one of the self-illuminating units 121L, but is not limited thereto.

In one embodiment, each second reflective unit 123R1 is substantially located between the second substrate 120 and the second light shielding unit 122S1 along the normal direction of the second substrate 120 (for example, the direction of the Z axis). For example, the direction from the second substrate 120 toward the positive Z axis can be the second reflection unit 123R1 and the second light shielding unit 122S1 in sequence. In some embodiments, the second reflection unit 123R1 is directly in contact with the inner surface of the second substrate 120 . For example, the second reflection unit 123R1 is directly in contact with the inner surface of the second substrate 120, and there is no film layer on the inner surface; The film layers on the inner surfaces are in contact. In other embodiments, other film layers (eg, other light-shielding layers) may optionally exist between the second reflection unit 123R1 and the second substrate 120 . In one embodiment, the height (or thickness) of the second shading unit 122S1 substantially along the normal direction of the second substrate 120 is greater than that of the self-emitting unit 121L substantially along the normal direction of the second substrate 120 (for example: Z axis) and/or the height (or thickness) of the second reflective unit 123R1 substantially along the normal direction of the second substrate 120 (eg, Z-axis direction).

By disposing the plurality of second reflection units 123R1 on at least one side of the self-emitting unit 121L, the probability of light emitted by the self-emitting unit 121L being absorbed by the second light-shielding unit 122S1 can be further reduced. In one embodiment, the height of the second reflective unit 123R1 (or referred to as the top surface of the second reflective unit 123R1 ) along the normal direction of the second substrate 120 (for example, the direction of the Z axis) is substantially equal to the self-illumination The height of the unit 121L (or referred to as the top surface of the self-illuminating unit 121L) is to avoid increasing the complexity of the reflected light.

Under the configuration of the display panel 11 in the above-mentioned embodiments, taking the second pixel unit P2 as an example, among the light emitted from the light-emitting unit 121L, only the second light beam L2 can enter the color conversion unit 111G, and the first light beam L1 is absorbed by the first shading unit 112S1 and/or the second shading unit 122S1, so the light emitted by the self-illuminating unit 121L corresponding to the second pixel unit P2 will not enter the adjacent first pixel unit P1 Or in the third pixel unit P3.

Referring to FIG. 5B , at least one difference from the display panel 11 of the embodiment shown in FIG. 5A lies in the configuration of the second light-shielding layer 122 and the second reflective layer 123 . For the rest of the same or similar parts, reference may be made to the above-mentioned embodiments, which will not be repeated here.

In an embodiment, the second light shielding layer 122 may have a plurality of second light shielding units 122S2 , and the second light shielding units 122S2 are disposed on the inner surface of the second substrate 120 . In FIG. 5B , a portion of the second light shielding unit 122S2 substantially extending along the Y axis is shown. Of course, other second light shielding units 122S2 substantially extending along the Y-axis and other substantially extending along the X-axis are further included in places not shown in the figure. These second light-shielding units 122S2 are respectively separated from the self-emitting unit 121L. In one embodiment, the height (for example: the top surface) of the second light shielding layer 122 in the normal direction of the second substrate 120 (for example: the direction of the Z axis) extends beyond the height (for example: the top surface) of the self-luminous layer 121 ), so as to prevent the light that should be injected into a specific pixel unit (for example, the light that should be injected into the second pixel unit P2) from entering an adjacent pixel unit (such as the first pixel unit P1 or the third pixel unit P3).

In an embodiment, the second reflective layer 123 may have a plurality of second reflective units 123R2 , and the second reflective units 123R2 may be disposed on the inner surface of the second substrate 120 . The second reflective units 123R2 can be respectively disposed on at least one side of the self-illuminating unit 121L. In one embodiment, each second reflective unit 123R2 may be located around at least a part of at least one self-illuminating unit 121L. Preferably, the second reflective unit 123R2 may be located around at least one of the self-illuminating units 121L, but is not limited thereto.

In one embodiment, each second reflection unit 123R2 may be located between the second light shielding unit 122S2 and at least one of the self-illuminating units 121L. Taking the second pixel unit P2 as an example, the second pixel unit P2 can be the second light shielding unit 122S2 , the second reflecting unit 123R2 , and the self-illuminating unit 121L in sequence from outside to inside. Viewed from another aspect, the second reflective unit 123R2 is located between the side of the self-emitting unit 121L and the side of the second light-shielding unit 122S2 . In some embodiments, the second light shielding unit 122S2 is in direct contact with the inner surface of the second substrate 120 . For example, the second shading unit 122S2 is directly in contact with the inner surface of the second substrate 120, and there is no film layer on the inner surface; or, there is a film layer on the inner surface of the second substrate 120, and the second shading unit 122S2 is directly in contact with the second substrate 120 The film layers on the inner surfaces are in contact.

By disposing the plurality of second reflective units 123R2 on at least one side of the self-illuminating unit 121L, the probability of light emitted by the self-emitting unit 121L being absorbed by the second light-shielding unit 122S2 can be further reduced. In one embodiment, the height of the second reflective unit 123R2 along the normal direction of the second substrate 120 (for example, the Z-axis direction) (or referred to as the top surface of the second reflective unit 123R2 ) is substantially equal to that of the self-luminous unit 121L. height (or referred to as the top surface of the self-luminous unit 121L), so as not to increase the complexity of the reflected light.

Under the configurations of the display panel 12 in the above-mentioned embodiments, taking the second pixel unit P2 as an example, among the light emitted from the light-emitting unit 121L, only the second light beam L2 can enter the color conversion unit 111G, and the first light beam L1 is absorbed by the first shading unit 112S1 and/or the second shading unit 122S1, so the light emitted by the self-illuminating unit 121L corresponding to the second pixel unit P2 will not enter the adjacent first pixel unit P1 Or in the third pixel unit P3.

Please refer to FIG. 5C , at least one difference from the display panel 11 of the embodiment shown in FIG. 5A is that the first light-shielding layer 112 and the first reflective layer 113 of the display panel 21 in FIG. 5C are similar to the configurations of the embodiment in FIG. 3 . For the rest of the same or similar parts, reference may be made to the above-mentioned embodiments, which will not be repeated here.

Under the configuration of the display panel 21 in each embodiment, taking the second pixel unit P2 as an example, among the light emitted from the light-emitting unit 121L, only the second light beam L2 can enter the color conversion unit 111G, and the first light beam L1 It is absorbed by the first shading unit 112S2 and/or the second shading unit 122S1, so the light emitted by the self-illuminating unit 121L corresponding to the second pixel unit P2 will not enter the adjacent first pixel unit P1 or In the third pixel unit P3.

In addition, by disposing a plurality of first reflection units 113R2 on at least one side of the color conversion units 111R, 111G, and 111B, for example, each first reflection unit 113R2 is disposed on the first shading unit 112S2 and one of the color conversion units. Between the units 111R, 111G or 111B, the light can be further reflected and concentrated to improve the light extraction efficiency.

Furthermore, the height (or thickness) of the first light shielding unit 112S2 is relatively high, so it can prevent the light that should be incident on a specific color conversion unit (for example, the light that should be incident on the color conversion unit 111R) from being directed toward other color conversion units. (for example, the color conversion unit 111G or 111B) is incident, resulting in light mixing and lowering the color saturation. Moreover, the thickness of the first reflective unit 113R2 is relatively thin, so as to prevent too much external light from being reflected by the first reflective unit 113R2 to reduce contrast.

Please refer to FIG. 5D , at least one difference from the display panel 12 of the embodiment shown in FIG. 5B is that the first light-shielding layer 112 and the first reflective layer 113 of the display panel 22 in FIG. 5D are similar to the configurations of the embodiment in FIG. 3 . For the rest of the same or similar parts, reference may be made to the above-mentioned embodiments, which will not be repeated here.

Under the configuration of the display panel 22 in each embodiment, taking the second pixel unit P2 as an example, among the light emitted from the light-emitting unit 121L, only the second light beam L2 can enter the color conversion unit 111G, and the first light beam L1 It is absorbed by the first shading unit 112S2 and/or the second shading unit 122S2, so the light emitted by the self-illuminating unit 121L corresponding to the second pixel unit P2 will not enter the adjacent first pixel unit P1 or In the third pixel unit P3.

In addition, by disposing a plurality of first reflection units 113R2 on at least one side of the color conversion units 111R, 111G, and 111B, for example, each first reflection unit 113R2 is disposed on the first shading unit 112S2 and one of the color conversion units. Between the units 111R, 111G or 111B, the light can be further reflected and concentrated to improve the light extraction efficiency.

Furthermore, the height (or thickness) of the first light shielding unit 112S2 is relatively high, so it can prevent the light that should be incident on a specific color conversion unit (for example, the light that should be incident on the color conversion unit 111R) from being directed toward other color conversion units. (for example, the color conversion unit 111G or 111B) is incident, resulting in light mixing and lowering the color saturation. Moreover, the thickness of the first reflective unit 113R2 is relatively thin, so as to prevent too much external light from being reflected by the first reflective unit 113R2 to reduce contrast.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (16)

1. A display panel, characterized in that, comprising: A first substrate and a second substrate, the second substrate is arranged correspondingly to the first substrate; A color conversion layer, disposed on the inner surface of the first substrate, the color conversion layer includes at least three color conversion units; A first light-shielding layer, having a plurality of first light-shielding units, the first light-shielding units are arranged on the inner surface of the first substrate, the first light-shielding units separate the at least three color conversion units, and the first light-shielding units a light shielding layer extending beyond the color conversion layer in the normal direction of the first substrate; A first reflective layer, having a plurality of first reflective units, the first reflective units are disposed on the inner surface of the first substrate, and the first reflective units are respectively disposed on at least one side of the at least three color conversion units side; At least three pixel units are disposed on the inner surface of the second substrate, wherein the at least three color conversion units correspond to the at least three pixel units; and A display medium layer is arranged between the first substrate and the second substrate. 2 . The display panel according to claim 1 , wherein a height of the first light-shielding layer above the color conversion layer in the normal direction of the first substrate is between 4 micrometers and 9 micrometers. 3. The display panel as claimed in claim 1, wherein the color conversion layer substantially does not extend beyond the first reflective layer in a normal direction of the first substrate. 4. The display panel according to claim 1, wherein each of the first light-shielding units comprises a first light-shielding structure and a second light-shielding structure, and each of the first reflecting units is along the normal direction of the first substrate Located between each of the first light shielding structures and each of the second light shielding structures, each of the first light shielding structures is located between the first substrate and each of the first reflection units along the normal direction of the first substrate. 5. The display panel according to claim 4, wherein the height of each of the second light-shielding structures along the normal direction of the first substrate is greater than the height of each of the first light-shielding structures along the normal direction of the first substrate. high. 6. The display panel as claimed in claim 1, wherein each of the first reflection units is located between each of the first light shielding units and each of the color conversion units. 7. The display panel according to claim 1, further comprising: A backlight module is arranged under the second substrate. 8. The display panel according to claim 1, further comprising: A self-luminous layer, disposed on the inner surface of the second substrate, the self-luminous layer includes at least three self-luminous units, and the at least three self-luminous units correspond to the at least three pixel units; and A second light-shielding layer has a plurality of second light-shielding units, and the second light-shielding units are arranged on the inner surface of the second substrate, and the second light-shielding units separate the at least three self-luminous units respectively. 9. The display panel according to claim 8, further comprising: A second reflection layer, having a plurality of second reflection units, the second reflection units are arranged on the inner surface of the second substrate, and the second reflection units are respectively arranged on at least one side of the at least three self-luminous units side; Wherein, the second light-shielding layer extends beyond the self-luminous layer in the normal direction of the second substrate. 10 . The display panel as claimed in claim 9 , wherein each of the second reflection units is located between the second substrate and each of the second light shielding units along the normal direction of the second substrate. 11 . 11. The display panel according to claim 10, wherein at least one of the second light shielding units has a height along the normal direction of the second substrate greater than at least one of the second reflecting units and/or Or the height of at least one of the self-luminous units along the normal direction of the second substrate. 12. The display panel as claimed in claim 9, wherein each of the second reflection units is located between each of the second light shielding units and each of the self-emitting units. 13. The display panel according to claim 1, further comprising: a flat layer covering the color conversion layer, the first light-shielding layer and the first reflective layer; and A polarizing layer is arranged on the side of the flat layer away from the first substrate. 14. The display panel according to claim 1, further comprising: A polarizing layer is arranged on the first substrate, and the color conversion layer is located between the polarizing layer and the first substrate. 15. The display panel according to claim 13 or 14, wherein the polarizing layer comprises a wire grid polarizing structure, and the wire grid polarizing structure has a plurality of wire grids. 16. The display panel as claimed in claim 1, wherein each of the color conversion units has a photoluminescent material.