TWI842374B

TWI842374B - Micro light-emitting display device

Info

Publication number: TWI842374B
Application number: TW112104162A
Authority: TW
Inventors: 吳柏威; 湯祥雯; 羅玉雲; 楊翔甯; 蔡昌峯
Original assignee: 錼創顯示科技股份有限公司
Filing date: 2021-07-22
Publication date: 2024-05-11

Abstract

A micro light-emitting display device with a plurality of display regions is provided. The micro light-emitting display device includes a substrate, a plurality of micro light-emitting elements, and a plurality of light-emitting auxiliary structures. The micro light-emitting elements are disposed on the substrate, and positions of the micro light emitting-elements define ranges of the display regions, wherein the micro light-emitting elements have a same first pitch in any display region between each other. The micro light emitting-elements have a second pitch between a border across any two adjacent display regions. The first pitch is different from the second pitch. The light-emitting auxiliary structures are respectively disposed on the micro light emitting-elements. The light-emitting auxiliary structures have a same third pitch between each other.

Description

微型發光顯示裝置Microluminescent display device

本發明是有關於一種微型發光顯示裝置。 The present invention relates to a micro-luminescent display device.

目前微型發光二極體(Micro Light Emitting Diode,Micro LED)所形成的顯示裝置的巨量轉移技術在顯示區域上無法一次製作大面積，皆是使用小面積且多次轉移的方式進行巨量轉移而拼接出顯示裝置。然而，多次轉移的方式同時也造成顯示裝置點亮後易有拼接線現象，其現象有可能來自不同顯示區域之間晶片偏移或亮度差異而造成群體之間偏移，進而易產生拼接線。 The current mass transfer technology of display devices formed by Micro Light Emitting Diode (Micro LED) cannot produce a large area at one time on the display area. All of them use a small area and multiple transfer methods to perform mass transfer and splice the display device. However, the multiple transfer method also causes the display device to have a splicing line phenomenon after it is lit. The phenomenon may come from the chip offset or brightness difference between different display areas, which causes the offset between groups, and thus easily produces splicing lines.

本發明提供一種微型發光顯示裝置，其能減少拼接線現象。 The present invention provides a micro-luminescent display device that can reduce the splicing line phenomenon.

本發明的一實施例提供一種具有多個顯示區域的微型發光顯示裝置。微型發光顯示裝置包括基板、多個微型發光元件以及多個第一出光輔助結構。這些微型發光元件設置在基板上，且這些微型發光元件的位置定義這些顯示區域的範圍，其中這些微型發光元件彼此之間在任一顯示區域內具有相同的第一節距。這些微型發光元件在橫跨任兩個相鄰的顯示區域的邊界之間具有第二節距。第一節距與第二節距不同。這些第一出光輔助結構分別設置在這些微型發光元件上。這些第一出光輔助結構彼此之間具有相同的第三節距。 An embodiment of the present invention provides a micro-luminescent display device having multiple display areas. The micro-luminescent display device includes a substrate, multiple micro-luminescent elements, and multiple first light-emitting auxiliary structures. These micro-luminescent elements are arranged on the substrate, and the positions of these micro-luminescent elements define the range of these display areas, wherein these micro-luminescent elements have the same first pitch in any display area. These micro-luminescent elements have a second pitch across the boundaries of any two adjacent display areas. The first pitch is different from the second pitch. These first light-emitting auxiliary structures are respectively arranged on these micro-luminescent elements. These first light-emitting auxiliary structures have the same third pitch.

在本發明的一實施例中，上述的第一節距與第三節距相同。 In one embodiment of the present invention, the first pitch mentioned above is the same as the third pitch.

在本發明的一實施例中，上述的這些第一出光輔助結構具有多個不同的面積。 In one embodiment of the present invention, the above-mentioned first light extraction auxiliary structures have multiple different areas.

在本發明的一實施例中，上述的這些微型發光元件具有多個不同的發光面積，且這些出光輔助結構具有相同的面積。 In one embodiment of the present invention, the aforementioned micro-light-emitting elements have a plurality of different light-emitting areas, and the light-emitting auxiliary structures have the same area.

在本發明的一實施例中，上述的這些第一出光輔助結構為導光結構，且這些第一出光輔助結構的折射率大於1且小於這些微型發光元件的折射率。 In one embodiment of the present invention, the above-mentioned first light extraction auxiliary structures are light guide structures, and the refractive index of these first light extraction auxiliary structures is greater than 1 and less than the refractive index of these micro-light emitting elements.

在本發明的一實施例中，在上述的任兩個相鄰的顯示區域中，這些第一出光輔助結構的邊緣與這些微型發光元件的邊緣之間的最小距離彼此不同。 In one embodiment of the present invention, in any two adjacent display areas mentioned above, the minimum distances between the edges of the first light extraction auxiliary structures and the edges of the micro-luminescent elements are different from each other.

在本發明的一實施例中，上述的這些第一出光輔助結構為反射層或吸收層，且各自具有出光開口。 In one embodiment of the present invention, the above-mentioned first light-emitting auxiliary structures are reflective layers or absorption layers, and each has a light-emitting opening.

在本發明的一實施例中，上述的這些第一出光輔助結構的出光開口之間具有相同的第三節距。 In one embodiment of the present invention, the light-emitting openings of the above-mentioned first light-emitting auxiliary structures have the same third pitch.

在本發明的一實施例中，上述的這些微型發光元件在基板上的投影完全覆蓋該些第一出光輔助結構的出光開口在該基板上的投影。 In one embodiment of the present invention, the projections of the aforementioned micro-luminescent elements on the substrate completely cover the projections of the light-emitting openings of the first light-emitting auxiliary structures on the substrate.

在本發明的一實施例中，在上述的任兩個相鄰的顯示區域中，這些第一出光輔助結構的邊緣與其出光開口之間的最小厚度彼此不同。 In one embodiment of the present invention, in any two adjacent display areas mentioned above, the minimum thickness between the edge of these first light-emitting auxiliary structures and their light-emitting openings are different from each other.

在本發明的一實施例中，微型發光顯示裝置更包括多個第二出光輔助結構。這些第二出光輔助結構分別設置在這些第一出光輔助結構的出光開口內。這些第二出光輔助結構之間具有相同的第四節距，且第四節距與第三節距相同。 In one embodiment of the present invention, the micro-luminescent display device further includes a plurality of second light-exit auxiliary structures. These second light-exit auxiliary structures are respectively disposed in the light-exit openings of these first light-exit auxiliary structures. These second light-exit auxiliary structures have the same fourth pitch, and the fourth pitch is the same as the third pitch.

在本發明的一實施例中，上述的這些第二出光輔助結構為導光結構，且這些第二出光輔助結構的折射率大於1且小於這些微型發光元件的折射率。 In one embodiment of the present invention, the above-mentioned second light extraction auxiliary structures are light guide structures, and the refractive index of these second light extraction auxiliary structures is greater than 1 and less than the refractive index of these micro-light emitting elements.

在本發明的一實施例中，上述的這些第二出光輔助結構的一部分延伸配置於這些第一出光輔助結構相對於這些微型發光元件的表面上。 In one embodiment of the present invention, a portion of the second light extraction auxiliary structures are extended and arranged on the surface of the first light extraction auxiliary structures relative to the micro-light emitting elements.

在本發明的一實施例中，上述的這些第一出光輔助結構之間互相連接，且這些第一出光輔助結構配置於這些微型發光元件之間的空間。 In one embodiment of the present invention, the above-mentioned first light extraction auxiliary structures are connected to each other, and these first light extraction auxiliary structures are arranged in the space between these micro-light emitting elements.

在本發明的一實施例中，微型發光顯示裝置更包括透光層。透光層設置在這些第一出光輔助結構與這些微型發光元件之間，且透光層配置於這些微型發光元件之間的空間。 In one embodiment of the present invention, the micro-luminescent display device further includes a light-transmitting layer. The light-transmitting layer is disposed between the first light-emitting auxiliary structures and the micro-luminescent elements, and the light-transmitting layer is disposed in the space between the micro-luminescent elements.

本發明的一實施例提供一種具有多個顯示區域的微型發光顯示裝置。微型發光顯示裝置包括基板、多個微型發光元件以及多個出光輔助結構。這些微型發光元件設置在基板上，且這些微型發光元件的位置定義這些顯示區域的範圍，其中這些微型發光元件彼此之間在任一顯示區域內具有相同的第一節距，且這些微型發光元件在橫跨任兩個相鄰的顯示區域的邊界之間具有第二節距。第一節距與第二節距不同。這些出光輔助結構分別設置在這些微型發光元件上。這些出光輔助結構為反射層或吸收層，且各自具有出光開口。這些出光輔助結構的出光開口的面積在橫跨任兩個相鄰的顯示區域的邊界處呈逐漸增加或逐漸遞減。 An embodiment of the present invention provides a micro-luminescent display device having multiple display areas. The micro-luminescent display device includes a substrate, multiple micro-luminescent elements, and multiple light-emitting auxiliary structures. The micro-luminescent elements are arranged on the substrate, and the positions of the micro-luminescent elements define the range of the display areas, wherein the micro-luminescent elements have the same first pitch within any display area, and the micro-luminescent elements have a second pitch across the boundaries of any two adjacent display areas. The first pitch is different from the second pitch. The light-emitting auxiliary structures are respectively arranged on the micro-luminescent elements. The light-emitting auxiliary structures are reflective layers or absorption layers, and each has a light-emitting opening. The areas of the light-emitting openings of these light-emitting auxiliary structures gradually increase or decrease across the boundaries of any two adjacent display areas.

在本發明的一實施例中，上述的這些出光輔助結構的出光開口之間的面積比落在0.8至1.2的範圍內。 In one embodiment of the present invention, the area ratio between the light-emitting openings of the above-mentioned light-emitting auxiliary structures falls within the range of 0.8 to 1.2.

基於上述，在本發明的一實施例的微型發光顯示裝置中，由於出光輔助結構之間具有相同的節距，使出光有效面積重新被定義，因此減緩了顯示區域之間存在拼接線的現象。 Based on the above, in a micro-luminescent display device of an embodiment of the present invention, since the light-emitting auxiliary structures have the same pitch, the effective light-emitting area is redefined, thereby alleviating the phenomenon of the existence of splicing lines between display areas.

10、10A、10B、10C、10D、10E、10F、10G、10H:微型發光顯示裝置 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H: Microluminescent display device

100:基板 100: Substrate

102、202:接合墊 102, 202: Joint pad

200、200B-1、200B-2、200B-3:微型發光元件 200, 200B-1, 200B-2, 200B-3: Micro light-emitting elements

300、300A-1、300A-2、300A-3、300C、300F、300G、300H、400、400E:出光輔助結構 300, 300A-1, 300A-2, 300A-3, 300C, 300F, 300G, 300H, 400, 400E: light-emitting auxiliary structure

204:表面 204: Surface

206-1、206-2、206-3:發光層 206-1, 206-2, 206-3: Luminescent layer

500:透光層 500: light-transmitting layer

d1、d2:距離 d1, d2: distance

O、O1、O2、O3:出光開口 O, O1, O2, O3: light outlet opening

P1、P2、P3、P4:節距 P1, P2, P3, P4: Pitch

R1、R2:顯示區域 R1, R2: Display area

圖1A是根據本發明的第一實施例的微型發光顯示裝置的俯視示意圖。 FIG1A is a schematic top view of a microluminescent display device according to the first embodiment of the present invention.

圖1B是圖1A的微型發光顯示裝置的側視示意圖。 FIG1B is a schematic side view of the microluminescent display device of FIG1A.

圖2是根據本發明的第二實施例的微型發光顯示裝置的側視示意圖。 Figure 2 is a side view schematic diagram of a microluminescent display device according to the second embodiment of the present invention.

圖3A是根據本發明的第三實施例的微型發光顯示裝置的俯視示意圖。 FIG3A is a schematic top view of a microluminescent display device according to the third embodiment of the present invention.

圖3B是根據本發明的第三實施例的微型發光顯示裝置的側視示意圖。 FIG3B is a schematic side view of a microluminescent display device according to the third embodiment of the present invention.

圖4A是根據本發明的第四實施例的微型發光顯示裝置的俯視示意圖。 FIG4A is a schematic top view of a microluminescent display device according to the fourth embodiment of the present invention.

圖4B是圖4A的微型發光顯示裝置的側視示意圖。 FIG4B is a schematic side view of the micro-luminescent display device of FIG4A.

圖5是根據本發明的第五實施例的微型發光顯示裝置的側視示意圖。 Figure 5 is a side view schematic diagram of a micro-luminescent display device according to the fifth embodiment of the present invention.

圖6是根據本發明的第六實施例的微型發光顯示裝置的側視示意圖。 Figure 6 is a side view schematic diagram of a microluminescent display device according to the sixth embodiment of the present invention.

圖7A是根據本發明的第七實施例的微型發光顯示裝置的俯視示意圖。 FIG7A is a schematic top view of a microluminescent display device according to the seventh embodiment of the present invention.

圖7B是圖7A的微型發光顯示裝置的側視示意圖。 FIG7B is a schematic side view of the micro-luminescent display device of FIG7A.

圖8A是根據本發明的第八實施例的微型發光顯示裝置的俯視示意圖。 FIG8A is a schematic top view of a microluminescent display device according to the eighth embodiment of the present invention.

圖8B是圖8A的微型發光顯示裝置的側視示意圖。 FIG8B is a schematic side view of the micro-luminescent display device of FIG8A.

圖9是根據本發明的第九實施例的微型發光顯示裝置的側視示意圖。 FIG9 is a side view schematic diagram of a microluminescent display device according to the ninth embodiment of the present invention.

圖1A是根據本發明的第一實施例的微型發光顯示裝置的俯視示意圖。圖1B是圖1A的微型發光顯示裝置的側視示意圖。為方便說明，說明書中各圖式僅簡單示意兩個顯示區域R1、R2，但微型發光顯示裝置10可具有的顯示區域R1、R2的數量應以實際生產狀況而定。而且，每一顯示區域R1、R2內微型發光元件200的數量簡單示意為3×3。例如，每一顯示區域R1、R2的面積約落在20×20至30×30mm²。因此，顯示區域R1、R2內微型發光元件200的數量的數量級大於10³。 FIG. 1A is a schematic top view of a microluminescent display device according to a first embodiment of the present invention. FIG. 1B is a schematic side view of the microluminescent display device of FIG. 1A. For the convenience of explanation, each figure in the specification simply illustrates two display regions R1 and R2, but the number of display regions R1 and R2 that the microluminescent display device 10 may have should be determined according to the actual production situation. Moreover, the number of microluminescent elements 200 in each display region R1 and R2 is simply illustrated as 3×3. For example, the area of each display region R1 and R2 is approximately 20×20 to 30×30 mm ² . Therefore, the number of microluminescent elements 200 in the display regions R1 and R2 is greater than 10 ³ .

請同時參考圖1A與圖1B，本發明的一實施例提供一種具有多個顯示區域R1、R2的微型發光顯示裝置10。微型發光顯示裝置10包括基板100、多個微型發光元件200以及多個第一出光輔助結構300。基板100例如是薄膜電晶體基板(Thin-Film Transistor,TFT)、印刷電路板(Printed circuit board,PCB)、軟性印刷電路板(Flexible Print Circuit,FPC)或其他類型的線路基板。微型發光元件200可為微型發光二極體(Micro Light Emitting Diode,Micro LED)、次毫米發光二極體(Mini Light Emitting Diode,Mini LED)或其他類型的微型發光元件。其中，微型發光元件200藉由微型發光元件200的接合墊202與基板100的接合墊102之間的連接與基板100電性接觸。 Please refer to FIG. 1A and FIG. 1B at the same time. An embodiment of the present invention provides a micro-luminescent display device 10 having multiple display areas R1 and R2. The micro-luminescent display device 10 includes a substrate 100, a plurality of micro-luminescent elements 200, and a plurality of first light-emitting auxiliary structures 300. The substrate 100 is, for example, a thin-film transistor substrate (TFT), a printed circuit board (PCB), a flexible printed circuit board (FPC), or other types of circuit substrates. The micro-luminescent element 200 can be a micro light emitting diode (Micro LED), a sub-millimeter light emitting diode (Mini LED), or other types of micro-luminescent elements. The micro-luminescent element 200 is electrically connected to the substrate 100 through the connection between the bonding pad 202 of the micro-luminescent element 200 and the bonding pad 102 of the substrate 100.

在本實施例中，微型發光元件200設置在基板100上，且微型發光元件200的位置定義顯示區域R1、R2的範圍。詳細來說，微型發光元件200彼此之間在任一顯示區域R1、R2內具有相同的第一節距(Pitch)P1。然而，微型發光元件200在橫跨任兩個相鄰的顯示區域R1、R2的邊界之間具有第二節距P2。第一節距P1與第二節距P2不同。因此，微型發光元件200的分佈在視覺上會在顯示區域R1、R2之間的交界處存在拼接線的現象。 In this embodiment, the micro-luminescent element 200 is disposed on the substrate 100, and the position of the micro-luminescent element 200 defines the range of the display areas R1 and R2. Specifically, the micro-luminescent elements 200 have the same first pitch (Pitch) P1 in any display area R1 and R2. However, the micro-luminescent element 200 has a second pitch P2 across the boundary of any two adjacent display areas R1 and R2. The first pitch P1 is different from the second pitch P2. Therefore, the distribution of the micro-luminescent elements 200 will visually have a splicing line phenomenon at the junction between the display areas R1 and R2.

為解決上述拼接線的現象，在本實施例中，第一出光輔助結構300分別設置在微型發光元件200上。第一出光輔助結構300彼此之間具有相同的第三節距P3。其中，第一出光輔助結構300被配置為使得第一節距P1與第三節距P3相同。也就是說，如圖1A的俯視圖所示，第一出光輔助結構300之間呈現相同的節距，因此減緩了顯示區域R1、R2之間的交界處存在拼接線的現象。 In order to solve the above-mentioned splicing line phenomenon, in this embodiment, the first light extraction auxiliary structures 300 are respectively arranged on the micro-light emitting element 200. The first light extraction auxiliary structures 300 have the same third pitch P3. Among them, the first light extraction auxiliary structures 300 are configured so that the first pitch P1 is the same as the third pitch P3. That is to say, as shown in the top view of FIG. 1A, the first light extraction auxiliary structures 300 have the same pitch, thereby reducing the phenomenon of the splicing line at the junction between the display areas R1 and R2.

在本實施例中，第三節距P3小於等於1微米。在一實施例中，第三節距P3小於等於500微米，可有較佳的顯示效果。 In this embodiment, the third pitch P3 is less than or equal to 1 micron. In one embodiment, the third pitch P3 is less than or equal to 500 microns, which can have a better display effect.

在本實施例中，第一出光輔助結構300可為導光結構，且第一出光輔助結構300的折射率大於1且小於微型發光元件200的折射率。此折射率差異有助於提高各微型發光元件200的出光效率。導光結構可以是無機材料，例如是二氧化矽或是氮化矽，除可增加導光效果，亦可以耐受製程中的高溫高壓保護微型發光元件200的表面。其中第一出光輔助結構300佔微型發光元件200的表面204比例至少大於等於0.5，可有較佳的導光效率。 In this embodiment, the first light extraction auxiliary structure 300 can be a light guide structure, and the refractive index of the first light extraction auxiliary structure 300 is greater than 1 and less than the refractive index of the micro-light emitting element 200. This refractive index difference helps to improve the light extraction efficiency of each micro-light emitting element 200. The light guide structure can be an inorganic material, such as silicon dioxide or silicon nitride, which can not only increase the light guide effect, but also withstand the high temperature and high pressure in the process to protect the surface of the micro-light emitting element 200. The first light extraction auxiliary structure 300 occupies a proportion of the surface 204 of the micro-light emitting element 200 of at least greater than or equal to 0.5, which can have a better light guide efficiency.

此外，在本實施例中，在任兩個相鄰的顯示區域R1、R2中，第一出光輔助結構300的邊緣與微型發光元件200的邊緣之間的最小距離d1、d2彼此不同，可控制出光光型。 In addition, in this embodiment, in any two adjacent display areas R1, R2, the minimum distances d1, d2 between the edge of the first light extraction auxiliary structure 300 and the edge of the micro-luminescent element 200 are different from each other, and the light extraction light type can be controlled.

基於上述，在本發明的一實施例的微型發光顯示裝置10 中，由於微型發光元件200上設置了出光輔助結構300，且出光輔助結構300之間具有相同的節距，使出光有效面積重新被定義，因此減緩了顯示區域R1、R2之間存在拼接線的現象。 Based on the above, in a micro-luminescent display device 10 of an embodiment of the present invention, since a light-emitting auxiliary structure 300 is provided on the micro-luminescent element 200, and the light-emitting auxiliary structures 300 have the same pitch, the effective light-emitting area is redefined, thereby alleviating the phenomenon of the splicing line between the display areas R1 and R2.

圖2是根據本發明的第二實施例的微型發光顯示裝置的側視示意圖。請參考圖2，微型發光顯示裝置10A與圖1B的微型發光顯示裝置10大致相同，其主要差異如下。在本實施例中，第一出光輔助結構300A-1、300A-2、300A-3具有多個不同的面積。圖2示意了出光輔助結構300A-1的面積大於出光輔助結構300A-2、300A-3的面積，且出光輔助結構300A-2的面積等於出光輔助結構300A-3的面積。舉例來說，出光輔助結構300A-1、300A-2及300A-3分別設置在紅光、綠光及藍光微型發光元件200上。一般來說，紅光發光二極體的發光效率低於綠光及藍光發光二極體的發光效率。因此，將第一出光輔助結構300A-1、300A-2、300A-3設計為具有多個不同的面積，例如紅光微型發光元件200對應的出光輔助結構300A-1大於綠光及藍光微型發光元件200對應的第一出光輔助結構300A-2、300A-3，其有助於使微型發光顯示裝置10A各色光的亮度顯示較一致。 FIG2 is a schematic side view of a micro-luminescent display device according to a second embodiment of the present invention. Referring to FIG2 , the micro-luminescent display device 10A is substantially the same as the micro-luminescent display device 10 of FIG1B , and the main differences are as follows. In this embodiment, the first light-exiting auxiliary structures 300A-1, 300A-2, and 300A-3 have a plurality of different areas. FIG2 illustrates that the area of the light-exiting auxiliary structure 300A-1 is larger than the areas of the light-exiting auxiliary structures 300A-2 and 300A-3, and the area of the light-exiting auxiliary structure 300A-2 is equal to the area of the light-exiting auxiliary structure 300A-3. For example, the light-extraction auxiliary structures 300A-1, 300A-2 and 300A-3 are respectively disposed on the red, green and blue micro-luminescent elements 200. Generally speaking, the light-emitting efficiency of a red light emitting diode is lower than that of a green and blue light emitting diode. Therefore, the first light-extraction auxiliary structures 300A-1, 300A-2 and 300A-3 are designed to have multiple different areas. For example, the light-extraction auxiliary structure 300A-1 corresponding to the red micro-luminescent element 200 is larger than the first light-extraction auxiliary structures 300A-2 and 300A-3 corresponding to the green and blue micro-luminescent elements 200, which helps to make the brightness display of each color light of the micro-luminescent display device 10A more consistent.

圖3A是根據本發明的第三實施例的微型發光顯示裝置的俯視示意圖。圖3B是根據本發明的第三實施例的微型發光顯示裝置的側視示意圖。請參考圖3A與圖3B，微型發光顯示裝置10B與圖1B的微型發光顯示裝置10大致相同，其主要差異如下。在本實施例中，微型發光元件200B-1、200B-2、200B-3具有多個不同的發光面積，但各自對應的出光輔助結構300具有相同的面積。圖3B示意了微型發光元件200B-1的尺寸大於微型發光元件200B-2、200B-3的尺寸，且微型發光元件200B-2的尺寸等於微型發光元件200B-3的尺寸。舉例來說，微型發光元件200B-1、200B-2及200B-3可分別為紅光、綠光及藍光發光二極體，也可以是同一光色的發光二極體，因製程關係而使其尺寸大小不同，其尺寸大小反應了發光層206-1、206-2、206-3的面積大小。因此，將發光面積不同的微型發光元件200B-1、200B-2、200B-3上的出光輔助結構300設計為具有相同的面積，其有助於使微型發光顯示裝置10B各色光的亮度顯示較一致，且可以不用再進行發光元件先行分選等級(即分Bin)，增加晶片利用率。 FIG. 3A is a schematic top view of a microluminescent display device according to a third embodiment of the present invention. FIG. 3B is a schematic side view of a microluminescent display device according to a third embodiment of the present invention. Referring to FIG. 3A and FIG. 3B , the microluminescent display device 10B is substantially the same as the microluminescent display device 10 of FIG. 1B , and the main differences are as follows. In this embodiment, the microluminescent elements 200B-1, 200B-2, and 200B-3 have a plurality of different luminescent areas, but the light-emitting auxiliary structures 300 corresponding to each of them have the same area. FIG. 3B illustrates that the size of the microluminescent element 200B-1 is larger than the sizes of the microluminescent elements 200B-2 and 200B-3, and the size of the microluminescent element 200B-2 is equal to the size of the microluminescent element 200B-3. For example, the micro-luminescent elements 200B-1, 200B-2 and 200B-3 can be red, green and blue light emitting diodes, respectively, or light emitting diodes of the same light color. Due to the manufacturing process, their sizes are different, and their sizes reflect the area sizes of the light emitting layers 206-1, 206-2 and 206-3. Therefore, the light-emitting auxiliary structure 300 on the micro-luminescent elements 200B-1, 200B-2 and 200B-3 with different light emitting areas is designed to have the same area, which helps to make the brightness display of each color light of the micro-luminescent display device 10B more consistent, and it is no longer necessary to sort the light emitting elements in advance (i.e., binning), thereby increasing the chip utilization rate.

圖4A是根據本發明的第四實施例的微型發光顯示裝置的俯視示意圖。圖4B是圖4A的微型發光顯示裝置的側視示意圖。請同時參考圖4A與圖4B，微型發光顯示裝置10C與圖1B的微型發光顯示裝置10大致相同，其主要差異如下。在本實施例中，第一出光輔助結構300C為反射層或吸收層，且各自具有出光開口O。第一出光輔助結構300B的出光開口O之間具有相同的第三節距P3。第一出光輔助結構300C可以為有機材料例如是黑色光阻，或是具有高反射率的金屬材料。其中出光開口O佔微型發光元件200的表面204比例至少大於等於0.5，可有較佳的出光效率。 FIG. 4A is a schematic top view of a microluminescent display device according to the fourth embodiment of the present invention. FIG. 4B is a schematic side view of the microluminescent display device of FIG. 4A. Please refer to FIG. 4A and FIG. 4B at the same time. The microluminescent display device 10C is substantially the same as the microluminescent display device 10 of FIG. 1B, and the main differences are as follows. In this embodiment, the first light-emitting auxiliary structure 300C is a reflective layer or an absorption layer, and each has a light-emitting opening O. The light-emitting openings O of the first light-emitting auxiliary structure 300B have the same third pitch P3. The first light-emitting auxiliary structure 300C can be an organic material such as a black photoresist, or a metal material with high reflectivity. The light-emitting opening O accounts for at least 0.5 of the surface 204 of the microluminescent element 200, which can have a better light-emitting efficiency.

在本實施例中，更具體來說，微型發光元件200在基板100上的投影完全覆蓋第一出光輔助結構300B的出光開口O在基板100上的投影，亦即出光開口O比微型發光元件200的出光面小，可控制出光光型。 In this embodiment, more specifically, the projection of the micro-luminescent element 200 on the substrate 100 completely covers the projection of the light-emitting opening O of the first light-emitting auxiliary structure 300B on the substrate 100, that is, the light-emitting opening O is smaller than the light-emitting surface of the micro-luminescent element 200, and the light-emitting light type can be controlled.

此外，在本實施例中，在任兩個相鄰的顯示區域R1、R2中，第一出光輔助結構300的邊緣與其出光開口O之間的最小厚度t1、t2彼此不同，可控制出光開口O的設計。 In addition, in this embodiment, in any two adjacent display areas R1, R2, the minimum thicknesses t1, t2 between the edge of the first light extraction auxiliary structure 300 and its light extraction opening O are different from each other, so that the design of the light extraction opening O can be controlled.

基於上述，在本發明的實施例的微型發光顯示裝置10C中，第一出光輔助結構300C被設計為反射層或吸收層，並調整出光開口O的位置使各微型發光元件200的出光處一致。因此，藉由調整顯示面積的方式使微型發光顯示裝置10C在相鄰的顯示區域R1、R2之間存在拼接線的現象減緩。 Based on the above, in the micro-luminescent display device 10C of the embodiment of the present invention, the first light-emitting auxiliary structure 300C is designed as a reflective layer or an absorption layer, and the position of the light-emitting opening O is adjusted to make the light-emitting points of each micro-luminescent element 200 consistent. Therefore, by adjusting the display area, the phenomenon of the existence of a splicing line between adjacent display areas R1 and R2 in the micro-luminescent display device 10C is reduced.

圖5是根據本發明的第五實施例的微型發光顯示裝置的側視示意圖。請參考圖5，微型發光顯示裝置10D與圖4B的微型發光顯示裝置10C大致相同，其主要差異如下。在本實施例中，微型發光顯示裝置10D更包括多個第二出光輔助結構400。第二出光輔助結構400分別設置在第一出光輔助結構300C的出光開口O內。第二出光輔助結構400之間具有相同的第四節距P4，且第四節距P4與第三節距P3相同。 FIG5 is a side view schematic diagram of a micro-luminescent display device according to the fifth embodiment of the present invention. Referring to FIG5, the micro-luminescent display device 10D is substantially the same as the micro-luminescent display device 10C of FIG4B, and the main differences are as follows. In this embodiment, the micro-luminescent display device 10D further includes a plurality of second light-emitting auxiliary structures 400. The second light-emitting auxiliary structures 400 are respectively disposed in the light-emitting openings O of the first light-emitting auxiliary structures 300C. The second light-emitting auxiliary structures 400 have the same fourth pitch P4, and the fourth pitch P4 is the same as the third pitch P3.

在本實施例中，第二出光輔助結構400為導光結構，且第二出光輔助結構400的折射率大於1且小於微型發光元件200的折射率。 In this embodiment, the second light extraction auxiliary structure 400 is a light guide structure, and the refractive index of the second light extraction auxiliary structure 400 is greater than 1 and less than the refractive index of the micro-light emitting element 200.

在本實施例中，第二出光輔助結構400在基板100上的投影與微型發光元件200在基板100上的投影互相重疊。更具體來說，微型發光元件200在基板100上的投影完全覆蓋第二出光輔助結構400在基板100上的投影，亦即第二出光輔助結構400比微型發光元件200的出光面小。 In this embodiment, the projection of the second light-exiting auxiliary structure 400 on the substrate 100 overlaps with the projection of the micro-luminescent element 200 on the substrate 100. More specifically, the projection of the micro-luminescent element 200 on the substrate 100 completely covers the projection of the second light-exiting auxiliary structure 400 on the substrate 100, that is, the second light-exiting auxiliary structure 400 is smaller than the light-exiting surface of the micro-luminescent element 200.

基於上述，在本發明的實施例的微型發光顯示裝置10D中，除了藉由調整第一出光輔助結構300C的出光開口O的位置使各微型發光元件200的出光處一致之外，出光開口O內更設置了第二出光輔助結構400。因此，微型發光顯示裝置10C除了可藉由降低亮度的方式使在相鄰的顯示區域R1、R2之間存在拼接線的現象減緩，更利用第二出光輔助結構400來提高微型發光顯示裝置10D的出光效率。 Based on the above, in the micro-luminescent display device 10D of the embodiment of the present invention, in addition to adjusting the position of the light-emitting opening O of the first light-emitting auxiliary structure 300C to make the light-emitting points of each micro-luminescent element 200 consistent, a second light-emitting auxiliary structure 400 is further provided in the light-emitting opening O. Therefore, the micro-luminescent display device 10C can not only reduce the phenomenon of the splicing line between the adjacent display areas R1 and R2 by reducing the brightness, but also use the second light-emitting auxiliary structure 400 to improve the light-emitting efficiency of the micro-luminescent display device 10D.

圖6是根據本發明的第六實施例的微型發光顯示裝置的側視示意圖。請參考圖6，微型發光顯示裝置10E與圖5的微型發光顯示裝置10D大致相同，其主要差異如下。在本實施例中，第二出光輔助結構400E的一部分延伸配置於第一出光輔助結構300C相對於微型發光元件200的表面上。此處第二出光輔助結構400E於微型發光元件200的表面的投影大於出光開口O於微型發光元件200的表面的投影，且第二出光輔助結構400E於微型發光元件200的表面的投影相同，經此來增加出光效率和一致顯示效果。而微型發光顯示裝置10E的優點相似於微型發光顯示裝置10D，在此不再贅述。 FIG6 is a side view schematic diagram of a microluminescent display device according to the sixth embodiment of the present invention. Referring to FIG6 , the microluminescent display device 10E is substantially the same as the microluminescent display device 10D of FIG5 , and the main differences are as follows. In this embodiment, a portion of the second light-emitting auxiliary structure 400E is extended and arranged on the surface of the first light-emitting auxiliary structure 300C relative to the microluminescent element 200. Here, the projection of the second light-emitting auxiliary structure 400E on the surface of the microluminescent element 200 is greater than the projection of the light-emitting opening O on the surface of the microluminescent element 200, and the projection of the second light-emitting auxiliary structure 400E on the surface of the microluminescent element 200 is the same, thereby increasing the light-emitting efficiency and the consistent display effect. The advantages of the microluminescent display device 10E are similar to those of the microluminescent display device 10D, which will not be repeated here.

圖7A是根據本發明的第七實施例的微型發光顯示裝置的俯視示意圖。圖7B是圖7A的微型發光顯示裝置的側視示意圖。請同時參考圖7A與圖7B，微型發光顯示裝置10F與圖4B的微型發光顯示裝置10C大致相同，其主要差異如下。在本實施例中，第一出光輔助結構300F之間互相連接，且第一出光輔助結構300F配置於微型發光元件200之間的空間。此處，第一出光輔助結構300F填滿微型發光元件200之間的空間，藉此，使顯示區域R1、R2之間的拼接線被遮住，進一步使微型發光顯示裝置10F內拼接線的現象減緩，並透過高佔黑比增加對比度。在未繪示出的實施例中，第一出光輔助結構300F也可以僅填滿顯示區域R1，R2之間的空間。 FIG. 7A is a schematic top view of a microluminescent display device according to the seventh embodiment of the present invention. FIG. 7B is a schematic side view of the microluminescent display device of FIG. 7A. Please refer to FIG. 7A and FIG. 7B simultaneously. The microluminescent display device 10F is substantially the same as the microluminescent display device 10C of FIG. 4B, and the main differences are as follows. In this embodiment, the first light-exiting auxiliary structures 300F are connected to each other, and the first light-exiting auxiliary structures 300F are arranged in the space between the microluminescent elements 200. Here, the first light extraction auxiliary structure 300F fills the space between the micro-luminescent elements 200, thereby covering the splicing line between the display areas R1 and R2, further reducing the phenomenon of the splicing line in the micro-luminescent display device 10F, and increasing the contrast through a high black ratio. In an embodiment not shown, the first light extraction auxiliary structure 300F can also only fill the space between the display areas R1 and R2.

圖8A是根據本發明的第八實施例的微型發光顯示裝置的俯視示意圖。圖8B是圖8A的微型發光顯示裝置的側視示意圖。請同時參考圖8A與圖8B，微型發光顯示裝置10G與圖4B的微型發光顯示裝置10C大致相同，其主要差異如下。在本實施例中，微型發光顯示裝置10F更包括透光層500。透光層500設置在第一出光輔助結構300G與微型發光元件200之間，且透光層500配置於微型發光元件200之間的空間。也就是說，透光層500可作為微型發光元件200的保護層，其有助於防止空氣中的水汙染微型發光元件200，進一步使微型發光顯示裝置10F的良率較佳。其中透光層500可為一膠材，折射率大於1且小於微型發光元件200的折射率，可讓微型發光元件200出光效果更佳。此處出光輔助結構300G可以為反射層或吸收層，使光透過出光開口O出光。 FIG8A is a schematic top view of a microluminescent display device according to the eighth embodiment of the present invention. FIG8B is a schematic side view of the microluminescent display device of FIG8A. Please refer to FIG8A and FIG8B simultaneously. The microluminescent display device 10G is substantially the same as the microluminescent display device 10C of FIG4B, and the main differences are as follows. In this embodiment, the microluminescent display device 10F further includes a light-transmitting layer 500. The light-transmitting layer 500 is disposed between the first light-exiting auxiliary structure 300G and the microluminescent element 200, and the light-transmitting layer 500 is configured in the space between the microluminescent elements 200. That is to say, the light-transmitting layer 500 can be used as a protective layer for the micro-luminescent element 200, which helps prevent water in the air from polluting the micro-luminescent element 200, and further improves the yield of the micro-luminescent display device 10F. The light-transmitting layer 500 can be a plastic material with a refractive index greater than 1 and less than the refractive index of the micro-luminescent element 200, which can make the micro-luminescent element 200 have a better light-emitting effect. The light-emitting auxiliary structure 300G here can be a reflective layer or an absorption layer, so that light can be emitted through the light-emitting opening O.

圖9是根據本發明的第九實施例的微型發光顯示裝置的側視示意圖。請參考圖9，微型發光顯示裝置10H與圖4B的微型發光顯示裝置10C大致相同，其主要差異如下。在本實施例中，出光輔助結構300H為反射層或吸收層，且各自具有出光開口O1、O2、O3。出光輔助結構300H的出光開口O1、O2、O3的面積在橫跨任兩個相鄰的顯示區域R1、R2的邊界處呈逐漸增加或逐漸遞減，其中相同的開口O1、O2或O3具有相同的開口大小。 FIG9 is a schematic side view of a micro-luminescent display device according to the ninth embodiment of the present invention. Referring to FIG9 , the micro-luminescent display device 10H is substantially the same as the micro-luminescent display device 10C of FIG4B , and the main differences are as follows. In this embodiment, the light-emitting auxiliary structure 300H is a reflective layer or an absorption layer, and each has light-emitting openings O1, O2, and O3. The areas of the light-emitting openings O1, O2, and O3 of the light-emitting auxiliary structure 300H gradually increase or decrease across the boundaries of any two adjacent display regions R1 and R2, wherein the same openings O1, O2, or O3 have the same opening size.

此外，出光開口O1、O2、O3之間的面積比太大或太小，其反而會導致拼接線的現象更明顯。因此，在本實施例中，出光輔助結構300H的出光開口O1、O2、O3之間的面積比較佳落在0.8至1.2的範圍內。 In addition, if the area ratio between the light output openings O1, O2, and O3 is too large or too small, it will lead to a more obvious phenomenon of the splicing line. Therefore, in this embodiment, the area ratio between the light output openings O1, O2, and O3 of the light output auxiliary structure 300H preferably falls within the range of 0.8 to 1.2.

基於上述，藉由在拼接線附近將出光開口O1、O2、O3的面積設計為逐漸增加或逐漸遞減的方式，其也有助於降低視覺上在顯示區域R1、R2之間的交界處存在拼接線的現象。較佳的，只在邊界處10%的出光輔助結構300H的出光開口具有增加或逐漸遞減的方式，中間顯示區域的出光開口仍維持一致的開口大小，可有較佳的顯示效果。 Based on the above, by designing the areas of the light-emitting openings O1, O2, and O3 near the splicing line to be gradually increased or gradually decreased, it also helps to reduce the visual splicing line phenomenon at the junction between the display areas R1 and R2. Preferably, only 10% of the light-emitting openings of the light-emitting auxiliary structure 300H at the border have an increasing or gradually decreasing method, and the light-emitting openings in the middle display area still maintain a consistent opening size, which can have a better display effect.

綜上所述，在本發明的一實施例的微型發光顯示裝置中，由於設置在微型發光元件上的出光輔助結構之間具有相同的節距，使出光有效面積重新被定義，因此減緩了顯示區域之間存在拼接線的現象。 In summary, in a micro-luminescent display device of an embodiment of the present invention, since the light-emitting auxiliary structures arranged on the micro-luminescent element have the same pitch, the effective light-emitting area is redefined, thereby alleviating the phenomenon of the existence of splicing lines between display areas.

10:微型發光顯示裝置 10: Microluminescent display device

100:基板 100: Substrate

102、202:接合墊 102, 202: Joint pad

200:微型發光元件 200: Micro light-emitting element

204:表面 204: Surface

300:出光輔助結構 300: Light-emitting auxiliary structure

d1、d2:距離 d1, d2: distance

P1、P2、P3:節距 P1, P2, P3: Pitch

R1、R2:顯示區域 R1, R2: Display area

Claims

一種微型發光顯示裝置，具有多個顯示區域，包括：一基板；多個微型發光元件，設置在該基板上，且該些微型發光元件的位置定義該些顯示區域的範圍，其中該些微型發光元件彼此之間在任一顯示區域內具有相同的第一節距，且該些微型發光元件在橫跨任兩個相鄰的顯示區域的邊界之間具有第二節距，該第一節距與該第二節距不同；以及多個第一出光輔助結構，分別設置在該些微型發光元件上，該些第一出光輔助結構為反射層或吸收層，且各自具有出光開口，其中該些第一出光輔助結構的出光開口的面積在橫跨任兩個相鄰的顯示區域的邊界處呈逐漸增加或逐漸遞減。 A micro-luminescent display device has multiple display areas, including: a substrate; multiple micro-luminescent elements, arranged on the substrate, and the positions of the micro-luminescent elements define the range of the display areas, wherein the micro-luminescent elements have the same first pitch within any display area, and the micro-luminescent elements have a second pitch across the boundaries of any two adjacent display areas, and the first pitch is different from the second pitch; and multiple first light-emitting auxiliary structures, respectively arranged on the micro-luminescent elements, the first light-emitting auxiliary structures are reflective layers or absorption layers, and each has a light-emitting opening, wherein the areas of the light-emitting openings of the first light-emitting auxiliary structures gradually increase or gradually decrease across the boundaries of any two adjacent display areas.

如請求項1所述的微型發光顯示裝置，其中該些第一出光輔助結構的出光開口之間的面積比落在0.8至1.2的範圍內。In the micro-luminescent display device as described in claim 1, the area ratio between the light-emitting openings of the first light-emitting auxiliary structures falls within the range of 0.8 to 1.2.

如請求項1所述的微型發光顯示裝置，其中該些第一出光輔助結構的該些出光開口之間具有相同的第三節距。In the micro-luminescent display device as described in claim 1, the light-emitting openings of the first light-emitting auxiliary structures have the same third pitch.

如請求項1所述的微型發光顯示裝置，其中在該任兩個相鄰的顯示區域中，該些第一出光輔助結構的邊緣與該些微型發光元件的邊緣之間的最小距離彼此不同。The micro-luminescent display device as described in claim 1, wherein in any two adjacent display areas, the minimum distances between the edges of the first light extraction auxiliary structures and the edges of the micro-luminescent elements are different from each other.

如請求項1所述的微型發光顯示裝置，其中該些微型發光元件在該基板上的投影完全覆蓋該些第一出光輔助結構的出光開口在該基板上的投影。The micro-luminescent display device as described in claim 1, wherein the projections of the micro-luminescent elements on the substrate completely cover the projections of the light-emitting openings of the first light-emitting auxiliary structures on the substrate.

如請求項1所述的微型發光顯示裝置，其中在該任兩個相鄰的顯示區域中，該些第一出光輔助結構的邊緣與其出光開口之間的最小厚度彼此不同。The micro-luminescent display device as described in claim 1, wherein in any two adjacent display areas, the minimum thicknesses between the edges of the first light-emitting auxiliary structures and their light-emitting openings are different from each other.

如請求項1所述的微型發光顯示裝置，更包括：多個第二出光輔助結構，分別設置在該些第一出光輔助結構的出光開口內，其中該些第二出光輔助結構為導光結構，且該些第二出光輔助結構的折射率大於1且小於該些微型發光元件的折射率。 The micro-luminescent display device as described in claim 1 further includes: A plurality of second light-exiting auxiliary structures, respectively disposed in the light-exiting openings of the first light-exiting auxiliary structures, wherein the second light-exiting auxiliary structures are light-guiding structures, and the refractive index of the second light-exiting auxiliary structures is greater than 1 and less than the refractive index of the micro-luminescent elements.

如請求項1所述的微型發光顯示裝置，更包括：多個第二出光輔助結構，分別設置在該些第一出光輔助結構的出光開口內，其中該些第二出光輔助結構的一部分延伸配置於該些第一出光輔助結構相對於該些微型發光元件的表面上。 The micro-luminescent display device as described in claim 1 further comprises: A plurality of second light-exit auxiliary structures, respectively disposed in the light-exit openings of the first light-exit auxiliary structures, wherein a portion of the second light-exit auxiliary structures extends and is disposed on the surfaces of the first light-exit auxiliary structures relative to the micro-luminescent elements.

如請求項1所述的微型發光顯示裝置，其中該些第一出光輔助結構之間互相連接，且該些第一出光輔助結構配置於該些微型發光元件之間的空間。In the micro-luminescent display device as described in claim 1, the first light-extraction auxiliary structures are connected to each other, and the first light-extraction auxiliary structures are arranged in the space between the micro-luminescent elements.

如請求項1所述的微型發光顯示裝置，更包括：一透光層，設置在該些第一出光輔助結構與該些微型發光元件之間，且該透光層配置該些微型發光元件之間的空間。 The micro-luminescent display device as described in claim 1 further comprises: A light-transmitting layer disposed between the first light-emitting auxiliary structures and the micro-luminescent elements, and the light-transmitting layer is disposed in the space between the micro-luminescent elements.