CN108962951B

CN108962951B - Display device and electronic device comprising same

Info

Publication number: CN108962951B
Application number: CN201810781545.9A
Authority: CN
Inventors: 周嘉田; 吴昱瑾
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2018-05-09
Filing date: 2018-07-12
Publication date: 2020-09-29
Anticipated expiration: 2038-07-12
Also published as: TWI674457B; CN108962951A; TW201947290A

Abstract

A display device and an electronic device comprising the same are provided, wherein the display device comprises a first substrate, at least three micro light-emitting elements, a color conversion layer and a pattern induction layer. The first substrate has a plurality of cells. At least one of the plurality of cells has at least three sub-cells. Each subunit has at least one first zone and at least three second zones located on at least three sides of the first zone. The at least three micro light-emitting elements are arranged on the first substrate and are positioned in at least two of the second areas of each subunit. The color conversion layer has at least three color conversion elements respectively corresponding to the first regions, and is located at least one part of the first region of each subunit. The pattern sensing layer is arranged on the first substrate and at least partially overlapped with the color conversion layer, and is provided with at least three pattern sensing elements which are respectively arranged corresponding to the color conversion elements.

Description

Display device and electronic device comprising same

Technical Field

The present invention relates to semiconductor devices, and more particularly, to a display device and an electronic device including the same.

Background

The display device has advantages of being light, thin, short, small, and energy-saving, so that it has been widely applied to various electronic products such as smart phones, notebook computers, tablet computers, televisions, and the like. Generally, electronic products have a high "screen-to-screen ratio" that allows users to have a larger field of view and a higher sense of immersion. Taking a smartphone as an example, the "screen occupation ratio" generally refers to the ratio of the area of a pixel region of a displayable frame of a display screen to the orthographic projection area of the smartphone body. Therefore, how to increase the screen ratio is also an important issue.

Disclosure of Invention

The present invention is directed to a display device with a built-in pattern sensor and an electronic device including the display device, wherein an effective display area of the display device is not affected, and is improved, and the display device has improved pattern sensing capability and/or transparency, and the display device has a built-in pattern sensor to make the display device light in weight and/or thin in thickness. The electronic device has high screen ratio, pattern sensing capability and/or transparency due to the display device, and the electronic device can be light in weight and/or thin in thickness.

The display device comprises a first substrate, at least three micro light-emitting elements, a color conversion layer and a pattern induction layer. The first substrate has a plurality of cells. At least one of the plurality of cells has at least three sub-cells. Each subunit has at least one first zone and at least three second zones. The at least three second regions are located on at least three sides of the first region. At least three micro light-emitting elements are arranged on the first substrate. The micro light-emitting elements are positioned in at least two of the second areas of each subunit to respectively display different colors. Each micro light-emitting element is electrically connected to the switching circuit, and the switching circuit comprises at least one switching element and at least one signal line. The color conversion layer has at least three color conversion elements. The color conversion elements are respectively arranged corresponding to the first areas. At least three color conversion elements convert out different colors. Each color conversion element is located in at least a portion of the first region of each subunit. The pattern sensing layer is arranged on the first substrate and is overlapped with at least part of the color conversion layer. The pattern sensing layer has at least three pattern sensing elements. At least three pattern sensing elements are respectively arranged corresponding to the color conversion elements. Each pattern sensing element is electrically connected to the reading circuit. The reading circuit comprises at least one reading element and at least one reading line. Each pattern sensing element is positioned on at least one part of each first area to be used as a pattern sensing area.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1 is a top view of a display device according to an embodiment of the invention;

FIG. 2A is a top view of a sub-unit of a display device according to a first embodiment of the present invention;

FIG. 2B is a cross-sectional view of the subunit of FIG. 2A according to the present invention;

FIG. 3A is a top view of a sub-unit of a display device according to a second embodiment of the present invention;

FIG. 3B is a cross-sectional view of the subunit of FIG. 3A according to the present invention;

FIG. 3C is a cross-sectional view of a subunit of FIG. 3A according to another embodiment of the present invention;

FIG. 3D is a cross-sectional view of a subunit of FIG. 3A according to yet another embodiment of the present invention;

FIG. 3E is a cross-sectional view of a subunit of FIG. 3A according to yet another embodiment of the present invention;

FIG. 4 is a top view of a sub-unit of a display device according to a third embodiment of the present invention;

FIG. 5 is a top view of a sub-unit of a display device according to a fourth embodiment of the present invention;

FIG. 6 is a top view of a sub-unit of a display device according to a fifth embodiment of the invention;

FIG. 7 is a schematic cross-sectional view illustrating a display device integrated with a touch device according to an embodiment of the invention;

fig. 8 is a schematic top view of an electronic device including a display device according to an embodiment of the invention.

Wherein the reference numerals

10: display device

20: touch control element

30: touch control display device

40: electronic device

50: electronic component

60: outer casing

100 a: first substrate

100 b: second substrate

100 bo: outer surface

110: retaining wall

110a, 522 a: opening of the container

120: filling layer

130: protective layer

132a, 132 b: contact window

140: display medium layer

200: micro light-emitting device

210: a first electrode

220: second electrode

230: luminescent layer

300: color conversion layer

300r, 300g, 300 b: color conversion element

400: pattern sensing layer

400r, 400g, 400 b: pattern sensing element

410: first induction electrode

420: second induction electrode

430: photoelectric conversion layer

500: light collimating layer

510: first structure

520. 520a, 520b, 520 c: second structure

522: shading pattern

600: polarizing layer

A-A': thread

D1: a first direction

D2: second direction

P: transparent zone

PI: pattern sensing area

R: reading line

RC: reading circuit

READ: reading element

R1: first region

R2: second region

R21: first light-emitting area

R22: second luminous zone

R23: third luminous zone

S: selection line

SU: sub-unit

T: switching element

U: unit cell

Detailed Description

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

As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within an acceptable range of deviation of the specified value as determined by one of ordinary skill in the art, taking into account the measurement in question and the specified amount of error associated with the measurement (i.e., the 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%. Further, as used herein, "about", "approximately" or "substantially" may be selected based on optical properties, etch properties, or other properties, with a more acceptable range of deviation or standard deviation, and not all properties may be applied with one standard deviation.

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

The illustrations presented herein are merely exemplary for the purpose of illustrating some aspects of the invention. Therefore, the shapes, the numbers and the proportional sizes of the respective elements shown in the schematic drawings should not be construed as limiting the present invention. For example, the actual number, size and shape of the sub-elements in FIG. 1 are merely illustrative and do not represent the actual number, size and shape of the sub-elements of the present invention as shown in the figures.

Fig. 1 is a top view of a display device according to an embodiment of the invention. Referring to fig. 1, the display device 10 of the present embodiment has a plurality of units U, for example. Herein, the plurality of units U in the area of the display device 10 may be referred to as a display pixel area. At least one of the plurality of units U (or which may be referred to as pixel units) has, for example, at least three subunits SU. In the present embodiment, at least one of the units U has, for example, three subunits SU.

Fig. 2A is a top view of a sub-unit of a display device according to a first embodiment of the invention. Referring to fig. 2A, fig. 2A is a top view of the sub-unit SU of the display device 10. A single SU has, for example, a first region R1 and at least three second regions R2, wherein the second regions R2 are located on at least three sides of the first region R1, and each SU has, for example, a first region R1 and at least three second regions R2, and three SU has three first regions R1 and a plurality of second regions R2. Wherein, the area of the first region R1 of a single sub-unit SU may be larger than the area of the at least one second region R2, for example. The first region R1 of the single sub-unit SU may be referred to as a non-display region since it is a non-display region. For example, but not limited to, a single SU has only one first region R1, and in other embodiments, a single SU has at least two first regions R1.

With reference to fig. 2A, the range of the single sub-unit SU (or may be referred to as a sub-pixel) of the present embodiment can be defined by the read line R and the select line S, for example, but the invention is not limited thereto. A single sub-unit SU may be provided with a plurality of signal lines (not shown), for example. The signal line may be at least one of at least one scan line (not shown), at least one data line (not shown), at least one common electrode line (not shown), at least one power supply line (not shown), or other suitable lines. The range of a single subunit SU, for example: is defined by two adjacent signal lines having the same function and two adjacent signal lines extending in different directions from the signal lines and having the same function. In the present embodiment, the range of a single sub-unit SU can be defined by, but not limited to, two adjacent signal lines (for example, but not limited to, two data lines or two high voltage power supply lines) having the same function, and two adjacent other signal lines (for example, but not limited to, two scan lines, two common electrode lines, or two low voltage power supply lines) having the same function, which are staggered (for example, but not limited to, vertical). In other embodiments, the range of a single sub-unit SU, for example: may be defined by two adjacent signal lines (for example, but not limited to, two data lines or two high-voltage power supply lines) having the same function and two adjacent signal lines (for example, but not limited to, one scan line and one common electrode line or one scan line and one low-voltage power supply line) having different functions, respectively, being staggered (for example, vertically). In other embodiments, the range of a single sub-unit SU can be defined by two adjacent signal lines (for example, but not limited to, a data line and a high-voltage power supply line) with different functions and two adjacent signal lines (for example, but not limited to, two scan lines, two common electrode lines, or two low-voltage power supply lines) with the same function being staggered (for example, vertically). In other embodiments, the range of a single sub-unit SU may be defined by two adjacent signal lines (e.g., but not limited to, a data line and a high-voltage power supply line) with different functions and two adjacent signal lines (e.g., but not limited to, a scan line and a common electrode line or a scan line and a low-voltage power supply line) with different functions alternately (e.g., vertically).

FIG. 2B is a cross-sectional view of the subunit of FIG. 2A according to the present invention. Referring to fig. 1, fig. 2A and fig. 2B, the display device 10 of the present embodiment includes a first substrate 100a, at least three micro light emitting elements 200, a color conversion layer 300 and a pattern sensing layer 400.

The first substrate 100a may include a rigid substrate or a flexible substrate, and the material thereof may be, for example, glass, plastic, or other suitable materials, or a combination thereof, but not limited thereto. The plurality of units U may be, for example, located on the first substrate 100 a. Further, the display device 10 may optionally further include a second substrate 100 b. The second substrate 100b is provided corresponding to the first substrate 100 a. An outer surface 100bo (see fig. 2B, 3B-3E) of the second substrate 100B may serve as a viewing surface. Viewed from another point, the display surface of the display device 10 may be the outer surface 100bo of the second substrate 100b, which may provide a display screen for a user to view. The second substrate 100b may include a rigid substrate or a flexible substrate, and the material thereof may be, for example, glass, plastic, or other suitable materials, or a combination thereof, but not limited thereto.

At least three micro light emitting devices 200 are disposed on at least two of the second regions R2 of the first substrate 100a, for example. The second region R2 where at least three micro light emitting devices 200 are disposed may be referred to as light emitting regions or display regions (e.g., the first light emitting region R21, the second light emitting region R22, and the third light emitting region R23), and at least two second regions R2 in each sub-unit SU may respectively display different colors. Viewed from another aspect, each of the micro light emitting elements 200 partially overlaps each of the second regions R2. In one embodiment, each second region R2, for example: each second region R2 of a single sub-unit SU may display different colors, such as three primary colors, but is not limited thereto. For example, each of the second regions R2 (e.g., the micro light emitting devices 200 in each of the second regions R2) may display different colors of red, green and blue, and the second region R2 may have, for example, a first light emitting region R21, a second light emitting region R22 and a third light emitting region R23 to respectively emit the colors of red, green and blue, but is not limited thereto. In some embodiments, at least three micro light emitting devices 200 can be electrically connected to at least one of the signal lines (e.g., at least one scan line (not shown), at least one data line (not shown), at least one common electrode line (not shown), at least one power supply line (not shown), or other suitable lines) via the corresponding switch devices T.

The size of each micro-light emitting device 200 is less than 100 microns, preferably less than 50 microns, but greater than 0 micron, but is not limited thereto. In one embodiment, the micro light emitting device 200 includes a first electrode 210, a light emitting layer 230, and a second electrode 220. The material of at least one of the first electrode 210 and the second electrode 220 may be a reflective material, a transparent or translucent material, other suitable materials, or a stack of the foregoing materials. The light-emitting layer 230 can be disposed between the first electrode 210 and the second electrode 220 such that the micro light-emitting device 200 forms a vertically arranged electrode structure, i.e. the first electrode 210 and the second electrode 220 are respectively located on different sides of the light-emitting layer 230. In other embodiments, the first electrode 210 and the second electrode 220 may also be located on the same side of the light-emitting layer 230, so that the micro light-emitting device 200 forms a horizontally arranged electrode structure. When the micro light emitting device 200 is an electrode structure horizontally arranged, the micro light emitting device 200 can be adhered to the first substrate 100a through an adhesive layer (not shown), and the adhesive layer (not shown) can have an insulating property (preferably, but not limited thereto), so as to prevent the generation of an abnormal current. The structure of the micro light emitting device 200 may be a P-N diode, a P-I-N diode, or other suitable structure. The light-emitting layer 230 may preferably include, for example, an inorganic light-emitting material, but is not limited thereto. In some embodiments, the light-emitting layer 230 may include an organic light-emitting material, or other suitable materials, or combinations thereof. The organic light emitting material may be, for example, an organic high molecular light emitting material, an organic small molecular light emitting material, an organic complex light emitting material, or other suitable materials. The inorganic luminescent material may for example be a perovskite material, a rare earth ion luminescent material, a rare earth fluorescent material, a semiconductor luminescent material, or other suitable material. In one embodiment, when the micro light-emitting device 200 is a vertically-arranged electrode structure, the electrode (e.g., the first electrode 210) of the micro light-emitting device 200 closer to the first substrate 100a is preferably a reflective conductive material (or referred to as a non-transparent conductive material), or a stacked layer of the reflective conductive material and the transparent conductive material, and the other electrode (e.g., the second electrode 220) of the micro light-emitting device 200 farther from the first substrate 100a comprises a transparent or semi-transparent conductive material. For example, when the micro light-emitting device 200 is a vertically arranged electrode structure, the electrode (e.g., the first electrode 210) of the micro light-emitting device 200 is closer to the first substrate 100a than the other electrode (e.g., the second electrode 220), so that the transparency of the other electrode (e.g., the second electrode 220) comprising a transparent or semitransparent conductive material is greater than the transparency of the electrode (e.g., the first electrode 210) comprising a non-transparent conductive material, and the electrode (e.g., the first electrode 210) can also serve as a light-shielding element. When the micro light-emitting device 200 is a horizontally arranged electrode structure, at least one of the electrodes and the other electrodes (e.g., the first electrode 210 and the second electrode 220) may be made of a reflective conductive material, a transparent or semi-transparent conductive material, other suitable materials, or a stack thereof. The reflective conductive material may be, for example, a metal, an alloy, a nitride of a metal material, an oxide of a metal material, an oxynitride of a metal material, or other suitable materials, or a stacked layer of at least two of the above materials. The transparent or translucent conductive material may be, for example, zinc oxide (ZnO), Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Indium Gallium Zinc Oxide (IGZO), Indium Gallium Oxide (IGO), Zinc Gallium Oxide (ZGO), graphene, carbon nanotubes/rods, metals or alloys less than about 60 angstroms, or other suitable materials.

The display device 10 of the present embodiment may optionally further include a retaining wall 110. In one embodiment, the retaining wall 110 may be disposed between the first region R1 and any one of the second regions R2, for example, the retaining wall 110 may be disposed between the first region R1 and the first light emitting region R21, between the first region R1 and the second light emitting region R22, or between the first region R1 and the third light emitting region R23, and besides the micro light emitting device 200 may be disposed at a proper position in each region (e.g., the first light emitting region R21) of the second region R2, the micro light emitting device 200 may not be disposed from the original region (e.g., the first light emitting region R21) to another region (e.g., the first region R1) to reduce the change of the available area of the first region R1. In one embodiment, the retaining wall 110 may be disposed between two adjacent second regions R2, for example, the retaining wall 110 may be disposed between any two adjacent first light emitting regions R21, second light emitting regions R22 and third light emitting regions R23, and in addition to disposing the micro light emitting device 200 at a proper position in each region of the second region R2 (e.g., the first light emitting region R21), the micro light emitting device 200 may not be disposed from the original region (e.g., the first light emitting region R21) to another region (e.g., the second light emitting region R22) to reduce the variation of each light emitting region. In some embodiments, the retaining walls 110 are preferably disposed on multiple sides (e.g., four sides) of the micro light-emitting device 200, so as to achieve the above-mentioned effects (e.g., the micro light-emitting device 200 is disposed at a proper position in each region (e.g., the first light-emitting region R21) of the second region R2, reduce the variation of the available area of the first region R1, and reduce the variation of the light-emitting region). The color of the retaining wall 110 is not limited, and when the retaining wall 110 is a colored retaining wall (e.g., a black retaining wall), the light emitted by two adjacent micro-light-emitting devices 200 can be prevented from interfering with each other, but the invention is not limited thereto. When the retaining wall 110 is a transparent retaining wall, in order to prevent the light emitted from two adjacent micro light-emitting devices 200 from interfering with each other, a reflective layer (not shown) or a connection electrode (not shown) connected to the horizontally arranged electrodes of the micro light-emitting devices 200 may be optionally coated on the sidewall of the transparent retaining wall. The light-reflecting layer may be a reflective material, a white material, other suitable materials, or a stack of transparent or translucent materials and at least one of the foregoing materials, or a combination of the foregoing. Here, the light emitted from the micro light-emitting device 200 to the dam 110 can be reused by the reflective layer (not shown) or the connecting electrode (not shown), so as to increase the brightness emitted from the micro light-emitting device 200. In some embodiments, the micro light-emitting device 200 may be disposed in the opening 110a defined by at least two retaining walls 110 in the second region R2, for example. In other embodiments, the filling layer 120 may be selectively filled in the opening 110a, and the filling layer 120 may be located on the micro light-emitting device 200 or surround the micro light-emitting device 200, for example, and thus may be used to protect the micro light-emitting device 200 in the opening 110a, but is not limited thereto.

In some embodiments, when the display device 10 further has a second substrate 100b corresponding to the first substrate 100a, the color conversion layer 300 can be disposed between the first substrate 100a and the second substrate 100b, for example: preferably, the color conversion layer 300 is disposed on the inner surface of the first substrate 100a, but is not limited thereto. In other embodiments, the color conversion layer 300 can be disposed on the inner surface of the second substrate 100 b. In one embodiment, the color conversion layer 300 and the pattern sensing layer 400 are disposed in the first region R1. The color conversion layer 300 has, for example, at least three color conversion elements and is disposed corresponding to the first regions R1 of the subunits SU, respectively. Viewed from another aspect, the at least three color conversion elements may be located, for example, at least a portion of the first region R1 of the respective subunit SU. In one embodiment, the color conversion layer 300 has three

color conversion elements

300R, 300g, 300b, which can each convert a different color and are respectively located at least a portion of the first region R1 of each subunit SU. The different colors that the

color conversion elements

300r, 300g, 300b can respectively convert may be three primary colors, for example: red, green, and blue, but not limited thereto. In one embodiment, the material of at least one of the

color conversion elements

300r, 300g, 300b is, for example, an organic material or an inorganic material, and it may be a single layer or at least two-layer structure, i.e., the

color conversion elements

300r, 300g, 300b may be, for example, a single layer or at least two layers, respectively. When the

color conversion elements

300r, 300g, 300b are at least two layers, the refractive indexes of the layers can be different from each other, so that the light can be refracted into different colors, for example: red, blue, or green, but not limited thereto. Preferably, the material of the

color conversion elements

300r, 300g, 300b is, for example, an inorganic material, but is not limited thereto. In some embodiments, the material of the

color conversion elements

300r, 300g, 300b may be, for example, an insulating material, a metal material, or a metal material and an insulating material, or other suitable materials. In other embodiments, the material of at least one of the

color converting elements

300r, 300g, 300b may comprise a color resist, quantum dots/rods, or other suitable color converting material, or a combination or stack of at least two of the foregoing materials. In one embodiment, when the

color conversion elements

300r, 300g, 300b are respectively a plurality of wire grids substantially parallel to each other, each

color conversion element

300r, 300g, 300b corresponding to a portion of each subunit SU can also convert light into a color of a different color, for example: red, blue, or green, so that the

pattern sensing elements

400R, 400g, 400b corresponding to the

color conversion elements

300R, 300g, 300b in the partial first region R1 respectively sense the corresponding colors, and the description of the corresponding

pattern sensing elements

400R, 400g, 400b can refer to the following description. The wire grid can be a single layer or a multi-layer structure and its material can be a metal, an alloy, an inorganic material as shown in the preceding paragraph, an organic material as shown in the preceding paragraph, or other suitable material. The periods (or referred to as wire grid periods) between the color conversion elements 300r (e.g., red conversion elements), 300g (e.g., green conversion elements) and 300b (e.g., blue conversion elements) corresponding to different colors may be different from each other. For example, the period of the grid of the color conversion element 300r (e.g., red conversion element) corresponding to the first color (e.g., red) is larger than the period of the grid of the color conversion element 300g (e.g., green conversion element) corresponding to the second color (e.g., green) and the period of the color conversion element 300b (e.g., blue conversion element) corresponding to the third color (e.g., blue), and the period of the grid of the color conversion element 300g (e.g., green conversion element) corresponding to the second color (e.g., green) is larger than the period of the grid of the color conversion element 300b (e.g., blue conversion element) corresponding to the third color (e.g., blue). One period of the

color conversion elements

300r, 300g, 300b may be defined as the width of one wire grid of the

color conversion elements

300r, 300g, 300b plus the gap width between two adjacent wire grids or the sum of half the width of each of two adjacent wire grids plus the gap width between two adjacent wire grids. For example: the gap width between two adjacent wire grids of at least one of the

color conversion elements

300r, 300g, 300b is, for example, about 122nm to 300nm, and the width of one wire grid of at least one of the

color conversion elements

300r, 300g, 300b is, for example, about 200nm to 700nm, but is not limited thereto.

The pattern sensing layer 400 is disposed on the first substrate 100a and at least partially overlaps the color conversion layer 300. In one embodiment, the pattern sensing layer 400 is disposed between the first substrate 100a and the color conversion layer 300. The pattern sensing layer 400 has at least three pattern sensing elements, for example: the

pattern sensing elements

400r, 400g, 400b may be disposed corresponding to the respective

color conversion elements

300r, 300g, 300b, respectively, to sense corresponding colors. For example, but not limited to, the first color pattern sensor 400r (e.g., the red pattern sensor 400r) corresponds to and senses the first color conversion element 300r (e.g., the red conversion element 300r), the second color pattern sensor 400g (e.g., the green pattern sensor 400g) corresponds to and senses the second color conversion element 300g (e.g., the green conversion element 300g), and the third color pattern sensor 400b (e.g., the blue pattern sensor 400b) corresponds to and senses the third color conversion element 300b (e.g., the blue conversion element 300 b). Viewed from another aspect, the at least three

pattern sensing elements

400R, 400g, 400b respectively located in the at least three first regions R1 of the at least three subunits SU can sense different colors of light, such as: the first color pattern sensor 400r (e.g., the red pattern sensor 400r) of the first sub-unit SU senses the first color (e.g., red), the second color pattern sensor 400g (e.g., the green pattern sensor 400g) of the second sub-unit SU senses the second color (e.g., green), and the third color pattern sensor 400b (e.g., the blue pattern sensor 400b) of the third sub-unit SU senses the third color (e.g., blue), but not limited thereto. In addition, the

pattern sensing elements

400R, 400g, 400b may be electrically connected to the corresponding READ circuit RC, and preferably, include at least one READ element READ and a READ line R, which can more accurately READ the signals converted by the

pattern sensing elements

400R, 400g, 400b, but are not limited thereto. In other embodiments, the READ circuit RC may not include the READ element READ, but only includes the READ line R. The READ element READ and the switch element T may be, for example, thin film transistor elements including a gate, a gate insulating layer, a semiconductor channel layer, a source and a drain. For example, at least one of the READ element READ and the switch element T may be a bottom gate thin film transistor element, such as: the gate is located below the semiconductor channel layer, but not limited to this, the READ element READ may also be a top gate type thin film transistor element, such as: a gate electrode is located over the semiconductor channel layer, or other types of switching elements. The semiconductor channel layer may be a single-layer or multi-layer structure, and the material thereof may be amorphous silicon, single crystal silicon, nano crystal silicon, microcrystalline silicon, polycrystalline silicon, organic semiconductor material, oxide semiconductor material, carbon nanotubes/rods, perovskite, or other suitable material. The READ element READ is disposed on the first substrate 100a and electrically connected to the READ line R. In some embodiments, the READ element READ can be electrically connected to the select line S more selectively, and can READ the signal converted by the corresponding pattern sensor (e.g., one of the

pattern sensor

400r, 400g, 400b) more accurately, but not limited thereto.

The

pattern sensing elements

400R, 400g, 400b of the pattern sensing layer 400 may be, for example, respectively located in at least a portion of the first region R1 of at least three subunits SU as a pattern sensing region PI. In the embodiment of fig. 2A, all of the first regions R1 are used as the pattern sensing regions PI, but the invention is not limited thereto, and in other embodiments, the first region R1 may include other regions, please refer to the following description. Therefore, in the foregoing description of the embodiment, the area of the first region R1 of the single sub-unit SU may be larger than the area of the at least one second region R2, for example, and the area of the pattern sensing region PI (or may be referred to as the first region R1) of the single sub-unit SU of the embodiment may be larger than the area of the at least one light emitting region (e.g., the first light emitting region R21, or may be referred to as the second region R2 with the micro light emitting device 200), for example. In the embodiment, since at least a portion of the first region R1 disposed on the display device 10 can be used for sensing images, the second region R2 (or may be referred to as a display region) of the display device 10 does not lose the available area of the second region R2 (or may be referred to as a display region) in order to meet the needs of other electronic components, and the available area of the second region R2 (or may be referred to as a display region) of the display device 10 is less affected and even more improved.

Each of the

pattern sensing elements

400r, 400g, and 400b of the pattern sensing layer 400 includes a first sensing electrode 410, a second sensing electrode 420, and a photoelectric conversion layer 430. The first sensing electrode 410 and the second sensing electrode 420 are correspondingly disposed, and the photoelectric conversion layer 430 is disposed between the sensing electrode (e.g., the first sensing electrode 410) and another sensing electrode (e.g., the second sensing electrode 420). The photoelectric conversion layer 430 can be used to convert light (e.g., colored light) into corresponding electrical signals. The material of the photoelectric conversion layer 430 may be a single layer or multiple layers, and the material may include an organic semiconductor material, an inorganic semiconductor material, graphene, carbon nanotubes/rods, perovskite, or other suitable materials. In one embodiment, the photoelectric conversion layer 430 may be of a P-N semiconductor material stack type, a P-I-N semiconductor material stack type, or other types of semiconductor material stacks, and at least one of the

pattern sensor devices

400r, 400g, 400b may be a P-N diode, a P-I-N diode, or other suitable structures. In one embodiment, the sensing electrode (e.g., the first sensing electrode 410) of the pattern sensing layer 400 closer to the first substrate 100a is preferably a reflective conductive material (or a non-transparent conductive material), or a stacked layer of a reflective conductive material and a transparent conductive material, and the reflective conductive material may be the same or different. The other sensing electrode (e.g., the second sensing electrode 420) of the pattern sensing layer 400 farther from the first substrate 100a comprises a transparent or semitransparent conductive material, and the reflective conductive material may be the same or different from the transparent or semitransparent conductive material. The transparency of another sensing electrode (e.g., the second sensing electrode 420) comprising a transparent or semitransparent conductive material is greater than the transparency of the sensing electrode (e.g., the first sensing electrode 410) comprising a non-transparent conductive material, and the sensing electrode (e.g., the first sensing electrode 410) can serve as a light shielding element to prevent noise (e.g., noise generated by other light).

In an embodiment, the first substrate 100a may optionally have a protection layer 130 thereon, but is not limited thereto. The passivation layer 130 covers the READ element READ in the first region R1 and the switch element T in the second region R2, and an electrode (e.g., the first electrode 210) of the micro light emitting device 200 and an electrode (e.g., the first sensing electrode 410) of at least one of the

pattern sensing devices

400R, 400g, 400b may be disposed on the passivation layer 130. The protection layer 130 may be a single-layer or multi-layer structure, and the material thereof includes an inorganic material (e.g., silicon oxide, silicon nitride, silicon oxynitride, or other suitable materials), an organic material (e.g., acryl, photoresist, epoxy, or other suitable materials), or other suitable materials. The protective layer 130 is provided with, for example,

contact windows

132a and 132 b. For example, but not limited to, the electrode (e.g., the first electrode 210) of each micro light emitting device 200 of the sub-unit SU can be electrically connected to the corresponding switch device T through the contact window 132a, and the electrode (e.g., the first sensing electrode 410) of at least one of the

pattern sensing devices

400r, 400g, 400b can be electrically connected to the corresponding READ device READ through the contact window 132 b.

Therefore, based on the descriptions of fig. 2A and fig. 2B of the foregoing embodiments, at least three sides of the first region R1 (or referred to as a non-display area) of each sub-unit SU in the display device 10 are provided with at least three second regions R2 (or referred to as light-emitting areas or display areas), at least a portion of the first region R1 of each sub-unit SU can be used as the pattern sensing area PI (including related elements, such as one of the color conversion elements 300R, 300g, and 300B, one of the pattern sensing elements 400R, 400g, and 400B, or other suitable elements) for sensing an image, and at least two regions of the second region R2 in the display device 10 are provided with the micro light-emitting elements 200 for displaying a picture of the display device 10, and the second region R2 can be referred to as a display area. Therefore, the available area of the second region R2 (display region) of each sub-unit SU of the display device 10 can be increased without losing the available area of the second region R2 of each sub-unit SU for matching with other electronic components (not shown). Furthermore, based on the description of the embodiment (e.g., the cross-sectional view of FIG. 2B), at least a portion of the first region R1 of the first substrate 100a of the display device 10, where the pattern sensor 400R, 400g, 400B is disposed, can be used as a lens (e.g., for video, self-timer, scanning, 3D identification unlocking, or other purposes suitable for lens) for use, so that the usable area of the display device 10 (e.g., the usable area of the first substrate 100 a) can be increased without losing the usable area (e.g., the usable area of the first substrate 100 a) for matching with other electronic components (not shown). Besides, the micro light emitting device 200 of the foregoing embodiment is disposed in the first region R1, which does not affect the pattern sensing and can obtain better image pattern sensing capability. In addition, the display device 10 with the built-in

pattern sensors

400r, 400g, 400b can be made lighter and/or thinner.

Fig. 3A is a top view of a sub-unit of a display device according to a second embodiment of the invention. FIG. 3B is a cross-sectional view of the subunit of FIG. 3A according to the present invention. It should be noted that the embodiment of fig. 3A and 3B follows the element numbers and part of the contents of the embodiment of fig. 2A and 2B, wherein the same or similar elements are denoted by the same or similar reference numbers, and the description of the same technical contents is omitted. For the description of the omitted portions, reference may be made to the description and effects of the foregoing embodiments, and the following embodiments are not repeated.

Referring to fig. 3A and 3B together, the sub-unit SU of the present embodiment is similar to the sub-unit SU of fig. 2A and 2B, but the main difference is: in fig. 3A and 3B, the first region R1 of the sub-unit SU of the present embodiment may include a transparent region P, so that the first region R1 of the present embodiment has the transparent region P and the pattern sensing region PI, and the description and association of the other similar or identical elements may refer to the previous embodiment and will not be further described herein. In the present embodiment, the color conversion layer 300 and the pattern sensing layer 400 are not disposed in the transparent region P of the first region R1, so that the transparent region P has a transparent property, such that a viewer can observe a rear view or light (e.g., light or view of the outer surface of the first substrate 100 a) of the transparent region P through the transparent region P. In some embodiments, the area ratio of the transparent region P and the pattern sensing region PI may be designed according to the transparency requirement, and the present invention is not limited thereto. Therefore, the transparency of each sub-unit SU of the display device 10 can be improved, and even more, the display device 10 can be referred to as a transparent or semi-transparent display device.

FIG. 3C is a cross-sectional view of a subunit of FIG. 3A according to another embodiment of the invention. It should be noted that the embodiment of fig. 3C follows the element numbers and partial contents of the embodiment of fig. 3B, wherein the same or similar elements are denoted by the same or similar reference numbers, and the description of the same technical contents is omitted. For the description of the omitted portions, reference may be made to the description and effects of the foregoing embodiments, and the following embodiments are not repeated.

Referring to fig. 3A and fig. 3C together, the sub-unit SU of the present embodiment is similar to the sub-unit SU of fig. 3B, but the main difference is that: the color conversion layer 300 of the present embodiment can be further disposed in the sub-units SU, and the description and association of the other similar or identical elements can be found in the foregoing embodiments and will not be further described. For example, the

color conversion elements

300R, 300g, 300b of the color conversion layer 300 may be further disposed on at least a portion of the second region R2 of each sub-unit SU, and the

color conversion elements

300R, 300g, 300b are located on the corresponding micro light emitting elements 200. The materials of the

color conversion elements

300r, 300g, 300b can be selected from the materials of the previous embodiments, and the materials can be substantially the same or different. In one embodiment, the

color conversion elements

300r, 300g, 300b may be disposed on the second electrode 220 and between at least two adjacent retaining walls 110. In the case where the micro light emitting devices 200 are used to display different colors of light (e.g., three primary colors), the

color conversion devices

300r, 300g, 300b may be used to improve the color purity of the colors; in the case where the micro light emitting device 200 is used to emit white light, blue light, ultraviolet light, or other colors of light, the color conversion device 300 can be used to convert the colors of different colors of light, such as three primary colors. For example, the color conversion element 300R (e.g., red conversion element) of the first color corresponds to a first partial region of the second region R2 (e.g., red region, in which there may be micro-light-emitting elements of red or other suitable colors (including the aforementioned colors)), the color conversion element 300g (e.g., green conversion element) of the second color corresponds to a second partial region of the second region R2 (e.g., green region, in which there may be micro-light-emitting elements of green or other suitable colors (including the aforementioned colors)), and the color conversion element 300b (e.g., blue conversion element) of the third color corresponds to a third partial region of the second region R2 (e.g., blue region, in which there may be micro-light-emitting elements of blue or other suitable colors (including the aforementioned colors)). Moreover, the color conversion layers 300 (e.g., the

color conversion elements

300R, 300g, 300b) of the present embodiment may be further disposed on at least a portion of the second region R2, and the

color conversion elements

300R, 300g, 300b are disposed on the corresponding micro light emitting elements 200. This embodiment can also be applied to fig. 2B shown in the previous embodiments.

FIG. 3D is a cross-sectional view of a subunit of FIG. 3A according to yet another embodiment of the invention. It should be noted that the embodiment of fig. 3D follows the element numbers and partial contents of the embodiment of fig. 3B, wherein the same or similar elements are denoted by the same or similar reference numbers, and the description of the same technical contents is omitted. For the description of the omitted portions, reference may be made to the description and effects of the foregoing embodiments, and the following embodiments are not repeated.

Referring to fig. 3A and fig. 3D together, the sub-unit SU of the present embodiment is similar to the sub-unit SU of fig. 3B, but the main difference is that: the display device 10 of the present embodiment may further include a light collimating layer 500, and the description and association of the remaining similar or identical elements may refer to the foregoing embodiments and will not be further described herein. The light directing layer 500 includes first structures 510, and for example includes at least three first structures 510. Each of the first structures 510 is located at least a portion of the first region R1 of each of the subunits SU, and the first structure 510, for example, the light directing layer 500, may be disposed on the color conversion layer 300 and the pattern sensing layer 400 of the first region R1. The first structure 510 is, for example, a micro convex lens. For example, the first structure 510 may be a micro meniscus lens (e.g., the bottom of the lens is concave (or can be considered to be convex in the direction of the second substrate 100 b) when viewed from the first substrate 100a toward the second substrate 100 b), a plano-convex lens (e.g., the bottom of the lens is substantially planar and the top is convex in the direction of the second substrate 100b when viewed from the first substrate 100a toward the second substrate 100 b), a lenticular lens (e.g., the bottom of the lens is convex toward the first substrate 100a and the top is convex toward the second substrate 100b when viewed from the first substrate 100a toward the second substrate 100 b), or other suitable convex lens. In a preferred embodiment, the first structure 510 is exemplified as a micro plano-convex lens, wherein the convex direction of the micro plano-convex lens is far away from the first substrate 100 a. Since the first structures 510 are micro convex lenses, the first structures 510 can focus light to increase the intensity of light to the color conversion layer 300. In some embodiments, the light collimating layer 500 may further include at least three second structures 520, for example, at least three

second structures

520a, 520b, and 520 c. Each

second structure

520a, 520b, 520c is located on at least a portion of each micro-light emitting element 200 of each sub-unit SU. For example, the second structure 520 of the optical alignment layer 500 may be disposed on another electrode (e.g., the second electrode 220) of the micro light emitting device 200 in the second region R2. The second structure 520 is different from the first structure 510, for example. For example, the second structure 520 may be a micro concave lens. For example, the second structure 520 may be a micro convex-concave lens (e.g., the bottom of the lens protrudes toward the first substrate 100a when viewed from the first substrate 100a toward the second substrate 100b in the figure, the top is a concave (or can be considered to protrude toward the first substrate 100 a), a micro flat-concave lens (e.g., the top of the lens is substantially planar when viewed from the first substrate 100a toward the second substrate 100b in the figure, the bottom is a convex toward the first substrate 100 a), a micro double-concave lens (e.g., the bottom of the lens is a concave (or can be considered to protrude toward the second substrate 100b, the top is a concave (or can be considered to protrude toward the first substrate 100 a) when viewed from the first substrate 100a toward the second substrate 100b in the figure, or other suitable concave lenses; in a preferred embodiment, the second structure 520 is a micro flat-concave lens as an example, the light emitted by the micro light-emitting device 200 is more uniformly directed toward the second substrate 100b, and the micro concave lens can further utilize the stray light to increase the brightness. The relative curvature of the curves of the micro-concave lenses can be adjusted as needed to converge or diverge the light, so the second structure 520 can be used to adjust the collimation of the light. Furthermore, the first structure 510 of the light alignment layer 500 of the present embodiment may be disposed on the color conversion layer 300 and the pattern sensing layer 400 of the first region R1 of each sub-unit SU and/or the

second structures

520a, 520b, and 520c of the light alignment layer 500 are disposed on at least a portion of each micro light emitting device 200 of the second region R2 of each sub-unit SU. This embodiment can also be applied to the embodiments shown in fig. 2B and/or fig. 3C.

FIG. 3E is a cross-sectional view of a subunit of FIG. 3A according to yet another embodiment of the invention. It should be noted that the embodiment of fig. 3E follows the element numbers and partial contents of the embodiment of fig. 3B, wherein the same or similar elements are denoted by the same or similar reference numbers, and the description of the same technical contents is omitted. For the description of the omitted portions, reference may be made to the description and effects of the foregoing embodiments, and the following embodiments are not repeated.

Referring to fig. 3A and fig. 3E together, the sub-unit SU of the present embodiment is similar to the sub-unit SU of fig. 3D, but the main difference between the two is: the second structure 520 of the present embodiment may be, for example, a light shielding pattern 522, and the description and association of the remaining similar or identical elements may refer to the foregoing embodiments and will not be further described herein. The light-shielding pattern 522 has at least one opening 522a, and the opening 522a overlaps at least a portion of the micro light-emitting device 200. The opening 522a of the light shielding pattern 522 may expose a central portion of the micro light emitting device 200 and a vicinity thereof, for example: the opening 522a of the light-shielding pattern 522 may expose a central portion of an electrode (e.g., the second electrode 220) of the micro light-emitting device 200 and a vicinity thereof, but is not limited thereto. Based on this, the light shielding pattern 522 can, for example, shield the divergent light (e.g., the light emitted toward the retaining wall 110) emitted from the micro light-emitting device 200 to adjust the collimation of the light emitted from the micro light-emitting device 200. Furthermore, the first structure 510 of the light alignment layer 500 of the present embodiment may be disposed on the color conversion layer 300 and the pattern sensing layer 400 of the first region R1 of each sub-unit SU and/or the second structure 520 (e.g., the light shielding pattern 522) is disposed on at least a portion of each micro light emitting device 200 of the second region R2 of each sub-unit SU. This embodiment can also be applied to the embodiments shown in fig. 2B and/or fig. 3C.

Fig. 4 is a top view of a sub-unit of a display device according to a third embodiment of the invention. Fig. 5 is a top view of a sub-unit of a display device according to a fourth embodiment of the invention. Fig. 6 is a top view of a sub-unit of a display device according to a fifth embodiment of the invention. It should be noted that the embodiment of fig. 4, 5 and 6 uses the element numbers and part of the contents of the embodiment of fig. 2A, wherein the same or similar elements are denoted by the same or similar reference numbers, and the description of the same technical contents is omitted. For the description of the omitted portions, reference may be made to the description and effects of the foregoing embodiments, and the following embodiments are not repeated.

Fig. 2A, fig. 4, fig. 5 and fig. 6 are respectively a diagram illustrating the arrangement relationship of the first light-emitting region R21, the second light-emitting region R22 and the third light-emitting region R23 in the second region R2 of the sub-unit SU. For example, in each of the embodiments illustrated in fig. 2A, 4, 5, and 6, the centroid connecting line of the first light-emitting regions R21 (or the first micro light-emitting elements) of the two adjacent sub-units SU is staggered (interleaved) with at least one of the centroid connecting line of the second light-emitting regions R22 (or the second micro light-emitting elements) of the two adjacent sub-units SU and the centroid connecting line of the third light-emitting regions R23 (or the third micro light-emitting elements) of the two adjacent sub-units SU. The following will describe in detail the arrangement relationship of the first light-emitting region R21 (or the first micro light-emitting element), the second light-emitting region R22 (or the second micro light-emitting element), and the third light-emitting region R23 (or the third micro light-emitting element) shown in each embodiment.

As shown in fig. 2A, on a plurality of sides of one sub-unit SU, a first light-emitting region R21 (or a first micro light-emitting element) and a second light-emitting region R22 (or a second micro light-emitting element) may be disposed, for example, on opposite sides of the first region R1, and a third light-emitting region R23 (or a third micro light-emitting element) may be disposed, for example, on the other opposite sides of the first region R1. From another perspective, the first light-emitting regions R21 (or the first micro light-emitting elements) and the second light-emitting regions R22 (or the second micro light-emitting elements) are substantially staggered (or alternately arranged) along the first direction D1, and the third light-emitting regions R23 are substantially arranged along the second direction D2. In addition, the first light-emitting region R21 and the second light-emitting region R22 correspond to another first light-emitting region R21 and another second light-emitting region R22 in the second direction D2, respectively, and a third light-emitting region R23 is disposed between the adjacent first light-emitting region R21 and second light-emitting region R22 in the second direction D2, for example, and another third light-emitting region R23 is disposed between the adjacent another first light-emitting region R21 and another second light-emitting region R22 in the second direction D2, for example. Viewed from another aspect, the centroid connecting line of two adjacent first light emitting regions R21 (or first micro light emitting devices) arranged in the second direction D2 and the centroid connecting line of two adjacent second light emitting regions R22 (or second micro light emitting devices) arranged in the second direction D2 are both staggered (e.g., substantially perpendicular) with the centroid connecting line of two adjacent third light emitting regions R23 (or third micro light emitting devices) arranged in the first direction D1.

As shown in fig. 4, on multiple sides of one sub-unit SU, the first light-emitting region R21 and the second light-emitting region R22 may be disposed on opposite sides of the first region R1, for example, and the third light-emitting region R23 may be disposed on the other opposite sides of the first region R1, for example. From another perspective, the first light emitting regions R21 and the second light emitting regions R22 are disposed alternately (or alternatively, disposed alternately) along the first direction D1, and the third light emitting regions R23 are disposed along the second direction D2. In addition, the first light emitting regions R21 and the second light emitting regions R22 are also substantially staggered (or alternatively arranged) along the second direction D2, for example: the first light-emitting region R21 corresponds to another second light-emitting region R22 in the second direction D2, and the second light-emitting region R22 corresponds to another first light-emitting region R21 in the second direction D2, and a corresponding third light-emitting region R23 is disposed between the adjacent first light-emitting region R21 and second light-emitting region R22 in the second direction D2, for example. Viewed from another aspect, the centroid connecting line of the first light-emitting region R21 (or the first micro light-emitting device) and the other first light-emitting region R21 (or the other first micro light-emitting device) and the centroid connecting line of the second light-emitting region R22 (or the second micro light-emitting device) and the other second light-emitting region R22 (or the other second micro light-emitting device) are both crossed with the centroid connecting line of the (interleaved man) third light-emitting region R23 (or the third micro light-emitting device) and the other third light-emitting region R23 (or the other third micro light-emitting device), and the centroid connecting line of the first light-emitting region R21 (or the first micro light-emitting element) and the other first light-emitting region R21 (or the other first micro light-emitting element) is crossed with the centroid connecting line of the second light-emitting region R22 (or the second micro light-emitting element) and the other second light-emitting region R22 (or the other second micro light-emitting element).

As shown in fig. 5, on a plurality of sides of one sub-unit SU, the first light-emitting region R21, the second light-emitting region R22, and the third light-emitting region R23 are each disposed, for example, on both sides of the first region R1. In one embodiment, the second light-emitting regions R22 are disposed on two opposite sides of the first light-emitting region R1, the second light-emitting region R22 disposed on one side is adjacent to the two third light-emitting regions R23, and the second light-emitting region R22 disposed on the other side is adjacent to the two first light-emitting regions R21. From another perspective, the first light-emitting regions R21, the second light-emitting regions R22, and the third light-emitting regions R23 may be substantially staggered along the first direction D1 (or referred to as an alternating arrangement), and the first light-emitting regions R21, the second light-emitting regions R22, and the third light-emitting regions R23 may also be substantially staggered along the second direction D2 (or referred to as an alternating arrangement). Further, for example, a corresponding third light-emitting region R23 is provided between the adjacent first light-emitting region R21 and the other second light-emitting region R22 in the second direction D2, and a corresponding other first light-emitting region R21 is provided between the adjacent other third light-emitting region R23 and the second light-emitting region R22 in the second direction D2. Viewed from another aspect, the centroid connecting line of the first light-emitting region R21 (or the first micro light-emitting device) and the other first light-emitting region R21 (or the other first micro light-emitting device) and the centroid connecting line of the third light-emitting region R23 (or the third micro light-emitting device) and the other third light-emitting region R23 (or the other third micro light-emitting device) are both crossed with the centroid connecting line of the (interleaved man) second light-emitting region R22 (or the second micro light-emitting device) and the other second light-emitting region R22 (or the other second micro light-emitting device), and the centroid connecting line of the first light-emitting region R21 (or the first micro light-emitting element) and the other first light-emitting region R21 (or the other first micro light-emitting element) is not crossed (e.g., is substantially parallel) with the centroid connecting line of the third light-emitting region R23 (or the third micro light-emitting element) and the other third light-emitting region R23 (or the other third micro light-emitting element).

As shown in fig. 6, on a plurality of sides of one sub-unit SU, the first light-emitting regions R21 are disposed, for example, on one side of the first region R1, the second light-emitting regions R22 are disposed, for example, on the opposite side of the first region R1 where the first light-emitting regions R21 are disposed, and the third light-emitting regions R23 are disposed, for example, on the other opposite sides of the first region R1. From another perspective, the first light emitting region R21 and the second light emitting region R22 are disposed substantially along the first direction D1, and the third light emitting region R23 is disposed substantially along the second direction D2, for example. In addition, the first light-emitting regions R21 and the second light-emitting regions R22 are substantially staggered (or alternatively referred to as alternating) along the second direction D2, and two third light-emitting regions R23 are disposed between adjacent first light-emitting regions R21 and second light-emitting regions R22 in the second direction D2, for example.

Therefore, the top views of fig. 4 to 6 of the foregoing embodiments and the related embodiments thereof are, for example: the cross-sectional views of fig. 3B to 3E illustrate that, since at least three second regions R2 are disposed on at least three sides of the first region R1 in the display device 10, at least a portion of the first region R1 of each sub-unit SU can be used as the pattern sensing region PI (including related elements, such as one of the color conversion elements 300R, 300g, 300B, one of the pattern sensing elements 400R, 400g, 400B, or other suitable elements) for sensing images, and at least two regions of the second region R2 in the display device 10 are provided with the micro light emitting elements 200 for displaying images in the display device 10, and the second region R2 can be referred to as a display region. Therefore, the available area of the second region R2 (display region) of each sub-unit SU of the display device 10 can be significantly increased without losing the available area of the second region R2 of each sub-unit SU in order to match with other electronic components (not shown). Furthermore, based on the descriptions of the embodiments (e.g., the cross-sectional views of fig. 3B to 3E), at least a portion of the first region R1 of the first substrate 100a of the display device 10, where the pattern sensor 400R, 400g, 400B is disposed, can be used as a lens (e.g., for video, self-photographing, image-scanning, 3D recognition unlocking, or other purposes suitable for lens) for use, so that the usable area of the display device 10 (e.g., the usable area of the first substrate 100 a) can be significantly increased without losing the usable area (e.g., the usable area of the first substrate 100 a) for matching with other electronic components (not shown). Besides, the micro light emitting device 200 of the foregoing embodiment is disposed in the first region R1, which does not affect the pattern sensing and can obtain better image pattern sensing capability. In addition, as described in the foregoing embodiments, the

pattern sensing elements

400r, 400g, 400b built in the display device 10 can be made lighter in weight and/or thinner in thickness.

Fig. 7 is a schematic cross-sectional view of a display device integrated with a touch device according to an embodiment of the invention. Referring to fig. 7, the display device 10 may further include a touch device 20. That is, the touch device 20 and the display device 10 can be integrated to form the touch display device 30. Fig. 7 shows a touch display device according to an embodiment of the invention. The touch display device 30 includes, for example, a first substrate 100a, a display medium layer 140 including a micro light emitting device 200, a second substrate 100b, and a touch device 20. The first substrate 100a and the second substrate 100b are disposed opposite to each other, and the display medium layer 140 is disposed between the first substrate 100a and the second substrate 100 b. The display medium layer 140 includes a plurality of microelements 200, and the relative positions thereof can be described with reference to any of the aforementioned embodiments. In the present embodiment, the touch device 20 is formed on an outer side (or called an outer surface) of the second substrate 100b or an outer side (or called an outer surface) of the first substrate 100a to form an on-cell touch display device, but not limited thereto. The touch device 20 can also be detachably disposed outside the display device 10 to form an out-cell touch display device. In addition, the touch-sensing device 20 can also be disposed inside the display device 10, for example: at least one of the first substrate 100a and the second substrate 100b has an inner surface to form an in-cell (in-cell) touch display device. In other embodiments, the touch device 20 can also be used with the electrodes associated with the micro-light emitting device 200, such as: one of the electrodes (e.g., the first electrode 210) and the other electrode (e.g., the second electrode 220) of the micro light-emitting device, at least one of the electrodes of the storage capacitor, other suitable electrodes, or a combination of at least one of the foregoing. The touch display device 30 may further include a polarizing layer 600, for example, the polarizing layer 600 is disposed between the touch device 20 and the second substrate 100b, so that only one direction of light vibrating in each direction can pass through the polarizing layer 600, and light vibrating in other directions can be shielded or absorbed by the polarizing layer 600. In some embodiments, the polarizing layer 600 may also be disposed outside the touch device 20. When the touch device 20 is the outermost side of the touch display device 30, the polarizing layer 600 is disposed on the touch device 20. When the touch device 20 is in the touch display device 30, the polarizing layer 600 is disposed on the second substrate 100 b. The components of the polarizing layer 600 can be a common thin film or a wire grid. In other embodiments, taking the embodiment shown in fig. 2A as an example, when the color conversion layer 300 in the second region R2 and the first region R1 is a wire grid and the color conversion layer 300 is further disposed on the micro light-emitting devices 200 in the second region R2 at a position similar to that shown in fig. 3C of the previous embodiment, the color conversion layer 300 disposed on the micro light-emitting devices 200 in the second region R2 can be used as a polarizer. In some embodiments, taking three sub-units SU as an example, the period of the wire grid (see the definition of the period) of the three

color conversion elements

300R, 300g, 300b respectively located on the first region R1 (having the

pattern sensing elements

400R, 400g, 400b) of the three sub-units SU is larger than the period of the wire grid of the color conversion layer 300 on the micro light emitting element 200 of the second region R2 of each sub-unit SU, for example: the period of the wire grid of the color conversion layer 300 on the micro light emitting devices 200 in the second region R2 is less than or substantially equal to 200 nanometers (nm), preferably less than or substantially equal to 120nm, and the width of a single wire grid is between about 10nm and about 200nm, preferably less than or substantially equal to 120nm, but not limited thereto. In one embodiment, the width of one of the wire grids of the

color conversion elements

300R, 300g, 300b of the micro light emitting device 200 corresponding to the second region R2 is, for example, about 10nm to about 200nm, and it is preferably about 30nm to 100nm, but is not limited thereto. If the

color conversion elements

300R, 300g, and 300b of the micro light emitting devices 200 corresponding to the second regions R2 with different colors are provided with a color conversion function in addition to the polarization function, the periods of the color conversion elements 300R (e.g., red conversion elements), the color conversion elements 300g (e.g., green conversion elements), and the color conversion elements 300b (e.g., blue conversion elements) of the micro light emitting devices 200 corresponding to the second regions R2 with different colors may be different from each other. For example, the period of the color conversion element 300R (e.g., red conversion element) corresponding to the first partial region of the second region R2 of the first color (e.g., red region, which may include red micro-light-emitting elements) may be greater than the period of the color conversion element 300g (e.g., green conversion element) corresponding to the second partial region of the second region R2 of the second color (e.g., green region, which may include green micro-light-emitting elements) and the period of the color conversion element 300b (e.g., blue conversion element) corresponding to the third partial region of the second region R2 of the third color (e.g., blue region, which may include blue micro-light-emitting elements), and the period of the color conversion element 300g (e.g., green conversion element) corresponding to the second partial region R2 of the second color (e.g., green region, which may include green micro-light-emitting elements) may be greater than the period of the third partial region (e.g., blue region, which may include blue micro-light emitting elements) of the color conversion element 300b (e.g.: blue conversion element). In other embodiments, only the micro light emitting devices 200 in the second region R2 have the wire grid of the color conversion layer 300 disposed thereon, but the pattern sensing devices (e.g., the

pattern sensing devices

400R, 400g, 400b) in the first region R1 may not have the wire grid of the color conversion layer 300 disposed thereon, but are not limited thereto. In some embodiments, when the wire grid is disposed on the pattern sensor (e.g., the

pattern sensor

400R, 400g, 400b) of the first region R1 and/or the micro light emitting device 200 of the second region R2, other color conversion layers may be optionally disposed on the pattern sensor (e.g., the

pattern sensor

400R, 400g, 400b) of the first region R1 and/or the micro light emitting device 200 of the second region R2 to improve the color purity of the color, but is not limited thereto.

Fig. 8 is a schematic top view of an electronic device including a display device according to an embodiment of the invention. The display device 10 according to the above embodiment of the present invention can be applied to the electronic device 40. Referring to fig. 8, fig. 8 is a schematic top view of an electronic device 40 including the display device 10. Preferably, the electronic device 40 including the display device 10 according to the foregoing embodiment of the present invention can have a very narrow frame, even without a frame, when the housing 60 is not visible on the front side. Furthermore, when facing the electronic device 40, it is preferable that the outer surface of the display device 10 is visible, but the holes for accommodating electronic component modules having other purposes (such as holes for accommodating speakers, holes for accommodating cameras, or holes for accommodating other components) and/or mechanical components (such as pressing type mechanical components or other mechanical components) are not visible, so that the display device 10 of the electronic device 40 presents a full-screen display. In one embodiment, the display device 10 may be electrically connected to the electronic component 50 to form the electronic device 40. In other embodiments, the housing 60 can accommodate the display device 10 and the electronic component 50, but is not limited thereto. The electronic element 50 may be, for example, a control element, an operating element, a processing element, an input element, a memory element, a driving element, a light emitting element, a protection element, a sensing element, a detection element, other functional elements, or a combination of the foregoing elements. Also, the type of the electronic device 40 may be, for example, a portable product (such as a smart phone, a video camera, a notebook, a game machine, a music player, an e-mail transceiver, a map navigator, a digital photo frame, or the like), an audio/video product (such as an audio/video projector, or the like), a screen, a television, an outdoor/indoor signboard, or a projector device, and the like.

Based on this, the electronic device 40 including the display device 10 of the foregoing embodiment may have a higher screen occupation ratio. Moreover, since the pattern sensing elements (e.g., the

pattern sensing elements

400r, 400g, 400b) are disposed on the first substrate 100a of the display device 10, the electronic device 40 including the display device 10 is lighter and/or thinner, thereby reducing the burden of the user carrying the electronic device 40.

In summary, the pattern sensor is disposed inside the display device, so that all areas of the second region (display region) in the display device of the present invention can be used for displaying, the effective display area of the display device can be relatively unaffected and even improved, and the display device with the pattern sensor built therein of the present invention can be used as a lens, for example. Besides, the micro light-emitting element is arranged outside the first area (comprising the pattern sensing area or the pattern sensing area and the transparent area), so that the image sensing capability can be improved without affecting the pattern sensing. Furthermore, the display device is provided with the pattern sensing element inside, so that the display device is lighter in weight and/or thinner in thickness. In addition, the electronic device including the display device of the present invention also has a high screen occupation ratio. In addition, since the pattern sensing element of the invention is disposed inside the display device (for example, on the first substrate), the electronic device including the display device is lighter and/or thinner, thereby reducing the burden of the user carrying the electronic device.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A display device, comprising:

a first substrate having a plurality of cells, at least one of the cells having at least three sub-cells, each sub-cell having at least a first region and at least three second regions, the second regions being located on at least three sides of the first region;

at least three micro light-emitting elements arranged on the first substrate, wherein the micro light-emitting elements are positioned in at least two of the second regions of each subunit to respectively display different colors, each micro light-emitting element is electrically connected to a switching circuit, and the switching circuit comprises at least one switching element and at least one signal line;

a color conversion layer having at least three color conversion elements, the color conversion elements being disposed corresponding to the first regions respectively and converting different colors, wherein each color conversion element is located in at least one portion of the first region of each subunit; and

a pattern induction layer arranged on the first substrate and at least partially overlapped with the color conversion layer, wherein the pattern induction layer has at least three pattern induction elements, the pattern induction elements are respectively arranged corresponding to the color conversion elements, each pattern induction element is electrically connected with a reading circuit, the reading circuit comprises at least one reading element and at least one reading line, and each pattern induction element is positioned in at least one part of each first area to be used as a pattern induction area.

2. The display device of claim 1, further comprising a light collimating layer disposed on the color conversion layer and the pattern sensing layer, wherein the light collimating layer has at least three first structures, and each of the first structures is located in at least a portion of the first region of each of the sub-units.

3. The display device of claim 1, further comprising a light collimating layer disposed on the color conversion layer and the pattern sensing layer, wherein the light collimating layer further comprises at least three second structures, each of the second structures being located on at least a portion of each of the micro light emitting elements of each of the sub-units.

4. The display device of claim 2, wherein the optical alignment layer further comprises at least three second structures, each of the second structures is located on at least a portion of each of the micro light-emitting elements of each of the sub-units, and each of the second structures is different from each of the first structures.

5. The display device according to claim 2, wherein each of the first structures comprises a micro-convex lens, and the convex direction of the micro-convex lens is away from the first substrate.

6. The display device according to claim 3 or 4, wherein each of the second structures comprises a concave micro-lens, and the concave direction of the concave micro-lens faces the first substrate.

7. The display device according to claim 3 or 4, wherein each of the second structures comprises a light-shielding pattern having at least one opening, and each of the openings overlaps at least a portion of each of the micro light-emitting elements.

8. The display device according to claim 1, wherein a portion of at least one of the first regions is a transparent region.

9. The display device according to claim 1, wherein each of the pattern sensing elements comprises a first sensing electrode, a second sensing electrode corresponding to the first sensing electrode, and a photoelectric conversion layer disposed between the first sensing electrode and the second sensing electrode, wherein the first sensing electrode is closer to the first substrate than the second sensing electrode.

10. The display device according to claim 9, wherein a transparency of the second sensing electrode is greater than a transparency of the first sensing electrode.

11. The display device according to claim 1, wherein each of the color conversion elements is further disposed on at least a portion of the second region of each of the sub-units and on each of the corresponding micro light emitting elements.

12. The display device of claim 1, wherein each of the micro light-emitting elements is located in each of the second regions of each of the sub-units.

13. The display device according to claim 1 or 12, wherein a line connecting the centroids of the first of the micro-light emitting elements of two adjacent sub-units crosses at least one of a line connecting the centroids of the second of the micro-light emitting elements of two adjacent sub-units and a line connecting the centroids of the third of the micro-light emitting elements of two adjacent sub-units.

14. The display device according to claim 1, wherein each color conversion element comprises at least two layers, and the layers have refractive indices different from each other.

15. The display device according to claim 1, further comprising a touch-sensing element, wherein the touch-sensing element overlaps at least a portion of the cells.

16. The display device of claim 1, further comprising a polarizing layer, wherein the polarizing layer overlaps at least a portion of the cells.

17. The display device according to claim 1, further comprising a second substrate corresponding to the first substrate, wherein the color conversion layer is disposed between the first substrate and the second substrate, and an outer surface of the second substrate serves as a viewing surface.

18. The display device according to claim 1, further comprising a dam disposed at least one of between the first region and any one of the second regions and between two adjacent second regions.

19. An electronic device comprising the display device according to any one of claims 1 to 18.