TWI663447B - Display panel - Google Patents

Abstract

A display panel includes a first substrate and a second substrate, a color conversion layer, a first light-shielding layer, a first reflective layer, at least three pixel units, and a display medium layer. The display medium layer is disposed between the first substrate and the second substrate. The color conversion layer includes at least three color conversion units, and the at least three color conversion units correspond to at least three pixel units. The first light-shielding layer has a plurality of first light-shielding units separated by at least three color conversion units, and the top of the first light-shielding layer along the normal direction of the first substrate extends beyond the color conversion layer. The first reflection layer has a plurality of first reflection units, and the first reflection units are respectively disposed on at least one side of the at least three color conversion units.

Description

Display panel

The present invention relates to a display panel, and more particularly to a display panel with better display quality.

With the advancement of technology, electronic display devices with display panels have been widely used in daily necessities. For example, smart phones, tablet computers, notebook computers, monitors, or televisions are all 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 output efficiency of the light source has become one of the goals of the relevant industry.

The invention relates to a display panel, which can further improve the display quality of the display panel and the light emitting efficiency of the light source by providing 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, and a first light shielding Layer, a first reflective layer, at least three pixel units, and a display medium layer. The second substrate is disposed 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. The color conversion layer includes at least three color conversion units. The first light-shielding layer has a plurality of first light-shielding units. The first light-shielding units are disposed on the inner surface of the first substrate. The first light-shielding units are separated by at least three color conversion units. The top of the normal direction of a substrate extends beyond the color conversion layer. The first reflection layer is adjacent to the first light-shielding layer. The first reflection layer has a plurality of first reflection units. The first reflection units are disposed on the inner surface of the first substrate. The first reflection units are disposed on at least three, respectively. At least one side of the color conversion unit. 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.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are described in detail below in conjunction with the accompanying drawings:

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

110‧‧‧first substrate

111‧‧‧ color conversion layer

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

112‧‧‧first light-shielding layer

112S1, 112S2‧‧‧The first shading unit

112A‧‧‧First light-shielding structure of first light-shielding unit

112B‧‧‧Second light-shielding structure of the first light-shielding unit

113‧‧‧first reflective layer

113R1, 113R2‧‧‧‧First reflection unit

114‧‧‧ flat layer

115‧‧‧polarizing layer

120‧‧‧second substrate

121‧‧‧Self-emitting layer

121L‧‧‧Self-emitting 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 media layer

P‧‧‧Pixel Unit

T‧‧‧active element

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

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

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

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

H5‧‧‧ the 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 as a whole

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

H7‧‧‧ the height of the first light-shielding 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‧‧‧Second Pixel Unit

P3‧‧‧third pixel unit

Q1‧‧‧ Quantum dot material used to generate red light wavelength

Q2‧‧‧ Quantum Dot Material for Green Wavelength

BL‧‧‧Light

GL‧‧‧Green

RL‧‧‧Red

PA‧‧‧Pixel Array

DL‧‧‧Data Line

PE‧‧‧Pixel electrode

SL‧‧‧scan line

FIG. 1 is a partial top view of a display panel according to an embodiment of the disclosure.

FIG. 2 illustrates a cross-section of a first substrate of a display panel according to an embodiment of the disclosure. view.

FIG. 3 illustrates a first substrate of a display panel according to another embodiment of the present disclosure. Sectional view.

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

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

The following is a detailed description of various embodiments. The present invention does not show all possible embodiments, and other implementation modes not provided in the present invention can also be applied. Moreover, the dimensional proportions in the drawings are not drawn according to the actual products. Therefore, the contents of the description and the drawings are only used to describe the embodiments, but not to limit the scope of protection of the present invention. In addition, some elements in the drawings in the embodiments are omitted to clearly show the technical features of the present invention. The following uses the same / similar symbols to indicate the same / similar elements or steps for explanation.

In the drawings, the thicknesses of layers, films, panels, regions, etc. are exaggerated for clarity. Throughout the description, 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 a physical and / or electrical connection. Furthermore, "electrically connected" or "coupled" can mean that there are other components between the two components.

As used herein, "about," "approximately," or "substantially" includes the stated value and an average value within an acceptable deviation range of a particular value determined by one of ordinary skill in the art, taking into account the measurements and A specific number of measurement-related errors (ie, limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the stated value, or within ± 30%, ± 20%, ± 10%, ± 5%. Furthermore, the terms "about", "approximately" or "substantially" used herein may select a more acceptable range of deviations or standard deviations based on optical properties, etching properties, or other properties, and all properties can be applied without one standard deviation. .

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 related art and the present invention, and will not be interpreted as idealized or excessive Formal meaning unless explicitly defined as such in this article.

Please refer to FIG. 1, which illustrates a partial top view of the display panel 1 according to an embodiment of the present disclosure. The display panel 1 includes a first substrate 110, where the first substrate 110 is close to one side of a viewer (for example, a human eye). For example, the viewing angle (for example, the viewing angle from the Z-axis direction) shown in the figure may be A viewing angle (eg, a viewing angle from a Z-axis direction) when a viewer (eg, a human eye) views 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 electrically connected to the at least one active device T. PE. The pixel array PA may further include a plurality of data lines DL, a plurality of scan lines SL, or other suitable lines. Each pixel unit P may be electrically connected to the corresponding data line DL and the corresponding scan line SL through the active device T. Connected to receive driving signals to drive pixel array PA.

Here, the display panel 1 further includes a first light shielding layer 112 disposed on an inner surface of the first substrate 110. The first light-shielding layer 112 is, for example, a black matrix, so as to prevent the adjacent pixel units P from generating mixed light and reducing color purity. The first light-shielding layer 112 may include a plurality of first light-shielding units (for example, as shown in Figs. 2 to 3). These first light-shielding units may substantially extend along the X-axis or Y-axis. The first shading unit may define a pixel unit P (or may be referred to as a sub-pixel unit). In some embodiments, the pixel unit P may be a single area or at least two areas, which may be designed or selected according to requirements.

Please refer to FIG. 2, which illustrates a cross-sectional view of one side of the first substrate 110 of the display panel 1 according to an embodiment of the present disclosure. The display panel 1 includes a color conversion layer 111 disposed on an 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 examples, but is not limited thereto. The color conversion units 111R, 111G, and 111B may correspond to one pixel unit P shown in FIG. 1 one-to-one, but are not limited thereto. As shown in FIG. 2, it is shown that the color conversion unit 111R corresponds to the first pixel unit P1.

The color conversion units 111R, 111G, and 111B may have a photoluminescence (PL) material with a single-layer or multi-layer structure, and the photoluminescence material may include a phosphor material, a quantum dot, QD) materials, perovskite materials, or other suitable photoluminescent materials. In an embodiment, the color conversion unit 111R may include, for example, a quantum dot material Q1 for generating a wavelength of red light, the color conversion unit 111G may include, for example, a quantum dot material Q2 for generating a wavelength of green light, and the color conversion unit 111B may, for example, It includes a transparent photoresist or a transparent flat layer, and 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 from a light source (for example, a backlight module) is blue, the color conversion unit 111R can convert the wavelength of blue light to the wavelength of red light, and the color conversion unit 111G can convert the wavelength of 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 may include, for example, a material for generating blue quantum dots (not labeled), the light BL emitted from the light source (for example, the backlight module) may be ultraviolet light, and the rest The color conversion unit (for example, 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 (for example, red light or green light).

As described 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 an inner surface of the first substrate 110. In FIG. 2, the first light-shielding unit 112S1 partially showing a portion extending substantially along the Y axis is shown. Of course, the places not shown in the figure further include other first light shielding units 112S1 extending substantially along the Y axis and other substantially extending along the X axis. These first light shielding units 112S1 are separated from the color conversion units 111R, 111G, and 111B to prevent light mixing. For example, the top of the first light-shielding layer 112 along the normal direction of the first substrate 110 (for example, the direction of the Z axis) extends beyond the color conversion layer 111 to avoid 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) is incident toward other color conversion units (for example, the color conversion units 111G and / or 111B).

The display panel 1 may further include a first reflective layer 113 adjacent to the first light-shielding layer 112. The first reflective layer 113 may be a single-layer or multi-layer structure, and the material of the first reflective layer 113 includes a metal, an alloy, or other suitable reflective materials. In one 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. These 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 extend substantially along the X-axis or the Y-axis. In the second figure, a part of the first reflection unit 113R1 extending substantially along the Y axis is shown. Of course, places not shown in the figure may further include other first reflection units 113R1 substantially extending along the Y axis and other substantially extending along the X axis. Therefore, the first reflection units 113R1 every two rows and every two columns on the X-Y plane may be located around at least a part of at least one of the color conversion units 111R, 111G, or 111B. 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 the plurality of first reflection units 113R1 on at least one side of the color conversion units 111R, 111G, and 111B, respectively, light rays (for example, including a light source (including a light source ( example Such as: the backlight module) the light BL and / or the converted light (for example: red light, green light and / or blue light) are absorbed to reduce the light output to further improve the light output efficiency.

In one embodiment, the color conversion layer 111 does not substantially 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 light output.

In one embodiment, each of the first light shielding units 112S1 may include a first light shielding structure 112A and a second light shielding structure 112B. Each first reflection unit 113R1 is substantially located between the first light-shielding structure 112A and the second light-shielding structure 112B along the normal direction (eg, the direction of the Z axis) of the first substrate 110, and the first light-shielding structure 112A is substantially A 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 may be the first light shielding structure 112A, the first reflection unit 113R1, and the second light shielding structure 112B in this order. Viewed from another aspect, the first reflection unit 113R1 is sandwiched between the first light-shielding structure 112A and the second light-shielding structure 112B, and at least a portion of the first reflection unit 113R1 and the first light-shielding structure 112A overlap and the first reflection unit 113R1 At least partially overlaps 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 may preferably surround the color conversion unit 111R, but is not limited thereto. Compared with a display panel without the first light-shielding structure 112A (for example, the first reflection 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. Into one In other words, since the display panel without the first light-shielding structure 112A directly contacts the inner surface of the first substrate 110 with the first reflection unit 113R1, the first reflection unit 113R1 easily reflects the light incident from the outside and reduces the contrast. .

In an embodiment, the display panel 1 may 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 is not limited thereto. For example, the flat layer 114 may 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 and has a plurality of wire grids. Any two of the wire grids are substantially parallel and have a gap. The color conversion layer 111 is located between the polarizing layer 115 and the first substrate 110. In some embodiments, a film layer may be selectively disposed 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 may be selectively present or not flat. Layer 114. The color conversion unit 111R corresponding to the first pixel unit P1 is taken 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 be incident on the color conversion. In the unit 111R, the quantum dot material Q1 is excited. 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. For detailed illustration, 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 facing 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 excited by the quantum dot material Q1 L3 can also be reflected by the first reflection unit 113R1. Therefore, the first reflection units 113R1 in every two rows and every two columns on the XY plane may preferably surround the color conversion unit 111R, and form a reflection cavity around the color conversion unit 111R, thereby To further reflect and concentrate the light to improve the light output efficiency.

As shown in FIG. 2, the height (or thickness) of the first light-shielding structure 112A substantially along the normal direction (for example, the direction of the Z axis) of the first substrate 110 is H1, and the first reflection unit 113R1 is substantially along the The height (or thickness) of the normal direction (for example, the direction of the Z axis) of the first substrate 110 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). ) Height (or thickness) is H3, and 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 height (or thickness) of the first light-shielding structure 112A, the first reflection unit 113R1, and the second light-shielding structure 112B substantially along the normal direction (for example, the direction of the Z axis) of the first substrate 110 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 micrometers and less than about 7 micrometers, and the height (or thickness, for example, H4) of the visible color conversion units 111R, 111G, and 111B is changed. 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 top of the first light-shielding layer 112 along the normal direction of the first substrate 110 (for example, the direction of the Z axis) exceeds the color conversion layer. The height (or thickness) of 111 can be between about 4 microns and about 9 microns. In addition, the height of the second light shielding structure 112B (for example: H3) is greater than the height of the first light shielding structure 112A (for example: H1). In an 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 does not substantially 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 to avoid reducing the light output. In one embodiment, the height of H5 is relatively high, such as about 12 microns. If H5 is greater than about 12 microns, the amount of light may be reduced; if H5 is less than about 12 microns, it may cause light mixing and reduce color saturation.

Please refer to FIG. 3, which illustrates a cross-sectional view of one side of the first substrate 110 of the display panel 2 according to another embodiment of the present disclosure. At least one difference between the display panel 2 of this embodiment and the display panel 1 of the embodiment shown in FIG. 2 is in the configuration of the first light shielding layer 112 and the first reflective layer 113. For other similarities or similarities, please refer to the description of the foregoing embodiments, and the description will not be repeated here.

In one 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 extending substantially along the Y-axis is shown. Of course, the places not shown in the figure further include other first light shielding units 112S2 extending substantially along the Y axis and other substantially extending along the X axis. These first light shielding units 112S2 are separated from the color conversion units 111R, 111G, and 111B, respectively, to prevent the occurrence of mixed light. The top of the first light-shielding layer 112 extends along the normal direction of the first substrate 110 (for example, the direction of the Z axis) beyond the color conversion layer 111 to avoid light that should be incident on a specific color conversion unit (for example, it should be incident on Color conversion unit (111R light) is incident on another color conversion unit (for example, 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. These 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 part 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 conversion unit 111R corresponding to the first pixel unit P1 as an example, the first pixel unit P1 can be the first light shielding unit 112S2, the first reflection unit 113R2, and the color conversion unit 111R in order from the outside to the inside. Viewed from another aspect, 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 directly in contact with the inner surface of the first substrate 110. For example, the first light-shielding 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; The film layer on the inner surface is in contact.

By disposing the 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 avoid shooting to the color conversion unit. The light at the sides of the switching units 111R, 111G, and 111B is absorbed to reduce the amount of light output to further improve the light output efficiency.

In one embodiment, the color conversion layer 111 does not substantially 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 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. For details, refer to the foregoing embodiment, and the description will not be 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 blocking unit 112S2. The absorbed 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 facing 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 of the first reflection units 113R2 may preferably surround the color conversion unit 111R, and form a reflection cavity around the color conversion unit 111R, thereby further reflecting and concentrating light to improve light efficiency.

As shown in FIG. 3, the height (or thickness) of the first reflection unit 113R2 substantially along the normal direction (for example, the direction of the Z axis) of the first substrate 110 is H6, and the first light shielding unit 112S2 is substantially along the Normal direction of the first substrate 110 (For example: the direction of the Z axis) The height (or thickness) is H7, the first reflection unit The size (or width) of element 113R2 is H8. In one embodiment, H6 is greater than about 3 microns and less than about 8 microns. In an 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 of the first reflective layer 113 ( Or 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 the first reflective layer 113 The height (or thickness) H6 in the normal direction (for example, the direction of the Z axis) of the first substrate 110. In one embodiment, the height (or thickness) of H7 is relatively high, such as about 12 microns. If H7 is larger than about 12 microns, the amount of light 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 (for example: 4 microns <(H7-H6) <9 microns). When the height (or thickness) of the color conversion units 111R, 111G, and 111B substantially along the normal direction (for example, the direction of the Z axis) of the first substrate 110 is substantially equal to H6, the first light shielding layer 112 is along The height of the top of the first substrate 110 in the normal direction (for example, the direction of the Z axis) exceeding 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 reflecting through the first reflection unit 113R2 to reduce contrast. .

Please refer to FIGS. 4A to 4B, which are cross-sectional views of the display panels 10 and 20 according to some embodiments of the present disclosure. In the embodiment of FIGS. 4A to 4B, the display The display panels 10 and 20 may be non-emissive displays, such as liquid crystal displays, but are not limited thereto.

As shown in FIGS. 4A to 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. 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 an electrophoretic material, an electrowetting material, an electric dust material, or other suitable non-self-emitting materials. Although FIGS. 4A to 4B are not shown, 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, for example, the first pixel unit P1 A second pixel unit P2 and a third pixel unit P3. These pixel units (for example, P1 to 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. The backlight module 130 is disposed below the second substrate 120 to emit light BL. Although the backlight module 130 shown in FIGS. 4A to 4B is a direct type backlight module disposed below the second substrate 120, the disclosure is not limited thereto. In other embodiments, the backlight module 130 may be an edge-lit backlight module. For example, the backlight module 130 may be disposed on the side of the second substrate 120, or the light source of the backlight module 130 may be disposed on an optical layer (for example, diffused light). Layer or light guide layer (not labeled), and an optical layer (eg, a diffused light layer or light guide layer, not labeled) is disposed below the second substrate 120. In addition, the material for manufacturing the light source of the backlight module may be organic material, inorganic material, perovskite material, or other suitable materials, or a combination of the foregoing, and / or the size of a single light source is not limited. (E.g. millimeter (mm), micrometer (μm), nanometer (nm), or other suitable ruler Inch).

Figures 4A-4B show 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, a wire grid polarizing structure) have been described in the embodiments of FIG. 2 and FIG. 3, and they have similar configurations. Repeat the description. In addition, in an embodiment, the display panels 10 and 20 may further include another polarizing layer (for example, another wire grid polarizing structure, not labeled), which is disposed on the second substrate 120, but is not limited thereto. In some embodiments, another polarizing layer (for example, another wire grid polarizing structure, not labeled) may be selectively disposed between the second substrate 120 and the display medium layer 140 or the outer surface of the second substrate 120 (or may be called (Between the second substrate 120 and the backlight module 130). In other embodiments, the other polarizing layer may be an external 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 from the backlight module 130 is blue, the color conversion unit 111R can convert the wavelength of blue light to the wavelength of red light, the color conversion unit 111G can convert the wavelength of blue light to the wavelength of green light, and the color The conversion unit 111B can directly penetrate the light BL, thereby causing the first pixel unit P1 to emit red light RL, the second pixel unit P2 to emit green light GL, and the third pixel unit P3 to emit blue light BL. When the light BL emitted from the backlight module 130 is ultraviolet light, the color conversion unit 111R can convert the wavelength of the ultraviolet light Changing to the wavelength of red light, the color conversion unit 111G can convert the wavelength of ultraviolet light to the wavelength of green light, and the color conversion unit 111B can convert the wavelength of ultraviolet light to 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 first light-shielding layer 112 and the first reflective layer 113 of the display panel 10 in FIG. 4A are similar in configuration to the various embodiments in FIG. 2, and reference may be made to the foregoing embodiment. As shown in FIG. 4A, by placing a plurality of first reflection units 113R1 on at least one side of the color conversion units 111R, 111G, and 111B, for example, the first reflection unit 113R1 is provided on the first light shielding structure 112A and the first Between the two light-shielding structures 112B, preferably, they can be located around the color conversion units 111R, 111G, and 111B, and can further reflect and concentrate light to improve light efficiency.

Furthermore, the first light-shielding structure 112A, the first reflection unit 113R1, and the second light-shielding structure 112B are sequentially disposed on the inner surface of the first substrate 110, and the overall height (or thickness), for example, FIG. 2 The H5) shown is relatively high, so that light that should be incident on a specific color conversion unit (for example, light that should be incident on color conversion unit 111R) can be prevented from entering other color conversion units (for example, color conversion unit 111G or 111B). , Resulting in a situation of mixed light and reduce color saturation. In addition, the first light-shielding structure 112A can prevent external light from being reflected by the first reflection unit 113R1 and reduce the contrast.

Referring 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 of the display panel 20 in FIG. 4B is And the first reflective layer 113 has a configuration similar to the embodiment of FIG. 3. For the remaining similarities or similarities, reference may be made to the foregoing embodiments, and the description will not be repeated here.

By placing the plurality of first reflection units 113R2 on at least one side of the color conversion units 111R, 111G, and 111B, for example, each of the first reflection units 113R2 is provided on the first light shielding unit 112S2 and one of the color conversion units 111R. , 111G or 111B, can further reflect and focus light to improve light output efficiency.

In addition, the height (or thickness, for example, H7 shown in FIG. 3) of the first light-shielding unit 112S2 is relatively high, so light that should be incident on a specific color conversion unit (for example, should be incident on color) can be avoided. The light from the conversion unit 111R is incident toward other color conversion units (for example, the color conversion unit 111G or 111B), resulting in a situation of mixed light and lowering the color saturation. In addition, the size (or width, for example, H8 shown in FIG. 3) of the first reflection unit 113R2 is relatively thin, so as to prevent excessive external light from reflecting through the first reflection unit 113R2 to reduce the contrast.

Please refer to FIGS. 5A to 5D, which are cross-sectional views of display panels 11, 12, 21, and 22 according to other embodiments of the present disclosure. In the embodiments shown in FIGS. 5A to 5D, the display panels 11, 12, 21, and 22 may be self-luminous displays, for example, equipped with electroluminescence (EL) elements (for example, organic EL elements, inorganic EL Element, perovskite light-emitting element, quantum dot light-emitting element, or other suitable electroluminescent material) or other suitable self-luminous display. In some embodiments, the size of a single electroluminescent device (for example: millimeter (mm), micrometer (μm), nanometer (nm), or other suitable sizes) is 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. The display medium layer 140 may include a self-emitting layer 121. Although Figures 5A to 5D are not shown, the display panels 11, 12, 21, and 22 may further include a pixel array PA as shown in Figure 1, and the pixel array PA includes at least three pixel units (or called At least three sub-pixel units), such as a first pixel unit P1, a second pixel unit P2, and a third pixel unit P3, which are disposed on the inner surface of the second substrate 120. In some embodiments, each pixel unit may be at least one region, for example, one region, two regions, or other suitable number of regions.

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

Figures 5A-5D completely show 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, a wire grid polarizing structure) have been described in the embodiments of FIG. 2 and FIG. 3, and they have similar configurations. Repeat the description. 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 labeled), or according to the design requirements More selectively includes another polarizing layer (for example, another wire grid polarizing structure or polarizer, not labeled).

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-emitting unit 121L emits blue light, the color conversion unit 111R can convert the wavelength of blue light to the wavelength of red light, the color conversion unit 111G can convert the wavelength of blue light to the wavelength of green light, and the color conversion unit 111B can directly penetrate the light BL or purify the wavelength of the light BL toward 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. When each self-emitting unit 121L emits ultraviolet light, the color conversion unit 111R can convert the wavelength of the ultraviolet light into the wavelength of the red light, the color conversion unit 111G can convert the wavelength of the ultraviolet light into the wavelength of the green light, and The color conversion unit 111B can convert the wavelength of the ultraviolet light into the wavelength of the blue light, thereby making the first pixel The 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 first light-shielding layer 112 and the first reflective layer 113 of the display panel 11 in FIG. 5A are similar in configuration to the embodiment in FIG. 2 and reference may be made to the foregoing embodiment. Referring to FIG. 5A, the display panel 11 further includes a second light shielding layer 122. In one 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, the second light-shielding unit 122S1 extending partially along the Y axis is shown. Of course, the places not shown in the figure further include other second light shielding units 122S1 substantially extending along the Y axis and other substantially extending along the X axis. These second light shielding units 122S1 are separated from the self-light emitting units 121L. In one embodiment, the second light-shielding layer 122 extends beyond the self-emitting layer 121 in the normal direction of the second substrate 120 (for example, the direction of the Z-axis) to prevent light (for example, light) from entering a specific pixel unit (for example, The light that should be incident on the second pixel unit P2) is incident on an 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 may be a single-layer or multi-layer structure, and its material includes metal, alloy, or other suitable reflective materials. In one 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. These second reflection units 123R1 are respectively disposed on at least one side of the self-light emitting unit 121L. In one embodiment, the second reflecting unit 123R1 may extend substantially along the X-axis or the Y-axis. In Figure 5A, the system shows a The second reflection unit 123R1 extends substantially along the Y axis. Of course, places not shown in the figure may further include other second reflecting units 123R1 extending substantially along the Y axis and other substantially extending along the X axis. Therefore, the second reflection units 123R1 every two rows and every two columns on the X-Y plane may be located around at least a part of at least one of the self-light emitting units 121L. Preferably, the second reflection unit 123R1 may be located around at least one of the self-light emitting units 121L, but is not limited thereto.

In one embodiment, each of the second reflecting units 123R1 is substantially located between the second substrate 120 and the second light shielding unit 122S1 along a 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 may be the second reflection unit 123R1 and the second light shielding unit 122S1 in this order. 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; or, there is a film layer on the inner surface of the second substrate 120, and the second reflection unit 123R1 is directly connected to the second substrate 120. The film layer on the inner surface is in contact. In other embodiments, other film layers (eg, other light-shielding layers) may be selectively present between the second reflection unit 123R1 and the second substrate 120. In an embodiment, the height (or thickness) of the second light shielding unit 122S1 substantially along the normal direction of the second substrate 120 is greater than the self-light emitting unit 121L substantially along the normal direction of the second substrate 120 (eg, Z The height (or thickness) of the second reflecting unit 123R1 substantially along the normal direction of the second substrate 120 (eg, the direction of the Z axis).

By arranging the plurality of second reflection units 123R1 on at least one side of the self-light-emitting unit 121L, the probability that the light emitted from the light-emitting unit 121L is absorbed by the second light-shielding unit 122S1 can be further reduced. In an embodiment, the height of the second reflection unit 123R1 substantially along the normal direction of the second substrate 120 (for example, the direction of the Z axis) (or referred to as the top surface of the second reflection unit 123R1) is substantially equal to The height of the light-emitting unit 121L (or the top surface of the self-light-emitting unit 121L), so as not to increase the complexity of the reflected light.

Under the configuration of the display panel 11 of the above embodiments, taking the second pixel unit P2 as an example, of the light emitted from the light emitting unit 121L, only the second light beam L2 can be incident on the color conversion unit 111G. The light beam L1 is absorbed by the first light-shielding unit 112S1 and / or the second light-shielding unit 122S1, so the light emitted from the light-emitting unit 121L corresponding to the second pixel unit P2 will not be incident on the adjacent first picture In the pixel unit P1 or 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 remaining similarities or similarities, reference may be made to the foregoing embodiments, and the description will not be repeated here.

In one 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, the second light-shielding unit 122S2, a portion of which extends substantially along the Y-axis, is shown. Of course, the places not shown in the figure further include other second light shielding units 122S2 extending substantially along the Y axis and other substantially extending along the X axis. These sections The two light shielding units 122S2 are separated from the self-light emitting unit 121L. In one embodiment, the height (eg, the top surface) of the second light-shielding layer 122 in the normal direction of the second substrate 120 (eg, the direction of the Z axis) extends beyond the height of the self-emitting layer 121 (eg, the top surface). Surface) to prevent light that should be incident on a specific pixel unit (for example, light that should be incident on the second pixel unit P2) from entering adjacent pixel units (such as the first pixel unit P1 or the third pixel) Unit P3).

In one 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. These second reflection units 123R2 may be respectively disposed on at least one side of the self-light emitting unit 121L. In one embodiment, each second reflection unit 123R2 may be located around at least a part of at least one of the self-light emitting units 121L. Preferably, the second reflection unit 123R2 may be located around at least one of the self-light emitting 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-light emitting units 121L. Taking the second pixel unit P2 as an example, the second pixel unit P2 can be a second light shielding unit 122S2, a second reflection unit 123R2, and a self-light emitting unit 121L in order from the outside to the inside. Viewed from another aspect, the second reflection unit 123R2 is located between the side of the self-light-emitting unit 121L and the side of the second light-shielding unit 122S2. In some embodiments, the second light shielding unit 122S2 is directly in contact with the inner surface of the second substrate 120. For example, the second light shielding unit 122S2 is in direct contact with the inner surface of the second substrate 120, and there is no film on the inner surface Or there is a film layer on the inner surface of the second substrate 120, and the second light shielding unit 122S2 is in direct contact with the film layer on the inner surface of the second substrate 120.

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

Under the configuration of the display panel 12 in the above embodiments, taking the second pixel unit P2 as an example, of the light emitted from the light emitting unit 121L, only the second light beam L2 can be incident into the color conversion unit 111G. The light beam L1 is absorbed by the first light-shielding unit 112S1 and / or the second light-shielding unit 122S1, so the light emitted from the light-emitting unit 121L corresponding to the second pixel unit P2 will not be incident on the adjacent first picture In the pixel unit P1 or the third pixel unit P3.

Referring 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 of FIG. 5C are similar to those of FIG. 3 Configuration of the embodiment. For the remaining similarities or similarities, reference may be made to the foregoing embodiments, and the description will not be repeated here.

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

In addition, a plurality of first reflection units 113R2 are 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 light shielding unit 112S2 and one of the color conversion units. Between units 111R, 111G, or 111B, light can be further reflected and concentrated to improve light output efficiency.

Furthermore, the height (or thickness) of the first light-shielding unit 112S2 is relatively high, so that light that should be incident on a specific color conversion unit (such as light that should be incident on the color conversion unit 111R) can be prevented from being converted toward other colors. A unit (such as a color conversion unit 111G or 111B) is incident, resulting in a mixed light situation and reducing color saturation. In addition, the thickness of the first reflection unit 113R2 is relatively thin, so as to prevent excessive external light from being reflected through the first reflection unit 113R2 to reduce the contrast.

Referring 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 of FIG. 5D are similar to those of FIG. 3 Configuration of the embodiment. For the remaining similarities or similarities, reference may be made to the foregoing embodiments, and the description will not be repeated here.

Under the configuration of the display panel 22 of each embodiment, taking the second pixel unit P2 as an example, of the light emitted from the light emitting unit 121L, only the second light beam L2 can be incident into the color conversion unit 111G, and the first light beam L1 is absorbed by the first light-shielding unit 112S2 and / or the second light-shielding unit 122S2, so it corresponds to the second pixel unit The light emitted by the self-light-emitting unit 121L of P2 will not enter the adjacent first pixel unit P1 or the third pixel unit P3.

In addition, a plurality of first reflection units 113R2 are 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 light shielding unit 112S2 and one of the color conversion units. Between units 111R, 111G, or 111B, light can be further reflected and concentrated to improve light output efficiency.

Furthermore, the height (or thickness) of the first light-shielding unit 112S2 is relatively high, so that light that should be incident on a specific color conversion unit (such as light that should be incident on the color conversion unit 111R) can be prevented from being converted toward other colors. A unit (such as a color conversion unit 111G or 111B) is incident, resulting in a mixed light situation and reducing color saturation. In addition, the thickness of the first reflection unit 113R2 is relatively thin, so as to prevent excessive external light from being reflected through the first reflection unit 113R2 to reduce the contrast.

In summary, although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims (14)

A display panel includes a first substrate and a second substrate. The second substrate is disposed corresponding to the first substrate. A color conversion layer is disposed on an 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 disposed on an inner surface of the first substrate, and the first light-shielding units are respectively separated from the at least three color conversion units; Unit, and the top of the first light-shielding layer along the normal direction of the first substrate extends beyond the color conversion layer; a first reflection layer is adjacent to the first light-shielding layer, and the first reflection layer has a plurality of A first reflection unit disposed on an inner surface of the first substrate, the first reflection units respectively disposed on at least one side of the at least three color conversion units; a flat layer covering the color A conversion layer, the first light-shielding layer, and the first reflective layer; a polarizing layer disposed on one side of the flat layer away from the first substrate; at least three pixel units disposed on the inner surface of the second substrate Wherein the at least three color conversion unit should be at least three pixel unit; and a display medium layer disposed between the first substrate and the second substrate. The display panel according to item 1 of the scope of patent application, wherein the height of the first light-shielding layer along the normal direction of the first substrate exceeds the height of the color conversion layer is between 4 micrometers and 9 micrometers. The display panel according to item 1 of the scope of patent application, wherein the color conversion layer does not substantially extend beyond the first reflective layer in a normal direction of the first substrate. The display panel according to item 1 of the scope of patent application, wherein each of the first light-shielding units includes a first light-shielding structure and a second light-shielding structure, and each of the first reflection units is located along a normal direction of the first substrate. 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 a normal direction of the first substrate. The display panel according to item 4 of the scope of patent application, wherein a height of each of the second light shielding structures along a normal direction of the first substrate is greater than a height of each of the first light shielding structures along a normal direction of the first substrate. The display panel according to item 1 of the scope of patent application, wherein each of the first reflection units is located between each of the first light shielding units and each of the color conversion units. The display panel according to item 1 of the patent application scope further includes a backlight module disposed under the second substrate. The display panel according to item 1 of the scope of patent application, further comprising: a self-emitting layer disposed on an inner surface of the second substrate, the self-emitting layer including at least three self-emitting units, and the at least three self-emitting units The unit corresponds to at least three pixel units; and a second light-shielding layer having a plurality of second light-shielding units, the second light-shielding units are disposed on the inner surface of the second substrate, and the second light-shielding units are separated from each other The at least three self-emitting units. The display panel according to item 8 of the scope of patent application, further comprising: a second reflection layer having a plurality of second reflection units, the second reflection units being disposed on the inner surface of the second substrate, and the second reflection units; The reflecting units are respectively disposed on at least one side of the at least three self-emitting units; wherein the second light-shielding layer extends beyond the self-emitting layer in a normal direction of the second substrate. The display panel according to item 9 of the scope of patent application, wherein each of the second reflection units is located between the second substrate and each of the second light shielding units along a normal direction of the second substrate. The display panel according to item 10 of the application, wherein a height of at least one of the second light-shielding units along a normal direction of the second substrate is greater than at least one of the second reflecting units and / or A height of at least one of the self-emitting units along a normal direction of the second substrate. The display panel according to item 9 of the scope of patent application, wherein each of the second reflecting units is located between each of the second light shielding units and each of the self-emitting units. The display panel according to item 1 of the scope of patent application, wherein the polarizing layer includes a wire grid polarizing structure, and the wire grid polarizing structure has a plurality of wire grids. The display panel according to item 1 of the scope of patent application, wherein each of the color conversion units has a photoluminescent material.