TWI793551B - Stretchable display - Google Patents

Abstract

A stretchable display is disclosed. The stretchable display includes islands and luminous sources. The luminous sources are disposed above the islands correspondingly. When the stretchable display is operated in a first state, a first island and a second island adjacently disposed among the islands are parallel to a specific direction and a first luminous source and a second luminous source adjacently disposed above the first island and the second island among the luminous sources have a specific angle with the specific direction in a first rotation direction and a second rotation direction opposite to each other respectively. When the stretchable display is operated in a second state, the first island and the second island have the specific angle with the specific direction in the second rotation direction and the first rotation direction respectively and the first luminous source and the second luminous source are parallel to the specific direction.

Description

stretchable display

The present invention relates to displays, in particular to a stretched display.

With the continuous evolution of display technology, the industry has developed a stretchable display (Stretchable display), which can be deformed by stretching and can be applied to wearable devices, Internet of Things devices, automobiles, and artificial intelligence devices.

As shown in FIG. 1A and FIG. 1B , a conventional stretchable display 1 usually includes an island area (Island) 10 and a tensile area (Tensile area) 12 and its deformability depends largely on the design of the tensile area 12 . However, although this design can effectively reduce the wiring stress, it is difficult to increase the pixel density (Pixels Per Inch, PPI) of the panel due to the large area occupied by the stretching area 12 through the wiring method, which needs to be further solved.

In view of this, the present invention proposes a stretchable display to effectively solve the above-mentioned problems encountered in the prior art.

A specific embodiment according to the present invention is a stretched display. In this embodiment, the stretched display includes a plurality of island regions and a plurality of light emitting sources. A plurality of light sources are correspondingly arranged above the plurality of island regions. When the stretch-type display operates in the first state, the adjacent first and second islands of the plurality of islands are parallel to a specific direction, and the adjacent ones of the plurality of light-emitting sources are arranged in the first The first light source and the second light source above the island area and the second island area respectively have a specific angle between the first rotation direction and the second rotation direction opposite to each other and the specific direction. When the stretched display operates in the second state, the first island area and the second island area have a specific angle between the second rotation direction and the first rotation direction and a specific direction, and the first light source and the second light source The source is parallel to a specific direction.

In one embodiment, the first state is an unstretched state and the second state is a stretched state.

In one embodiment, the first rotation direction is clockwise and the second rotation direction is counterclockwise, or the first rotation direction is counterclockwise and the second rotation direction is clockwise.

In one embodiment, the specific direction is a horizontal direction or a vertical direction.

In one embodiment, the plurality of light emitting sources are micro light emitting diodes (uLEDs).

In one embodiment, one or more groups of red, green and blue micro light emitting diodes are arranged above the same island of the plurality of islands.

In one embodiment, the micro light emitting diodes disposed above the same island of the plurality of islands need not be paired and spare micro light emitting diodes can be disposed.

In one embodiment, the plurality of light emitting sources are organic light emitting diodes (OLEDs).

In one embodiment, monochromatic or red, green and blue organic light emitting diodes are disposed above the same island region among the plurality of island regions.

In one embodiment, the red, green and blue organic light emitting diodes disposed on the same island among the plurality of islands are designed in different shapes.

In one embodiment, in the second state, the blue organic light emitting diodes are disposed on different island regions and arranged in a staggered manner, so as to improve the image quality of blue.

Compared with the prior art, the stretched display according to the present invention can be deformed by stretching, and it only needs to rotate its light source and/or islands correspondingly during the conversion process between the unstretched state and the stretched state It can be realized without setting a stretching area occupying a large area, so the pixel density (PPI) of the display panel can be effectively improved. In addition, the stretched display of the present invention can use micro light emitting diodes (uLED) or organic light emitting diodes (OLED) as the light source according to actual needs, and can change the design of the light source arranged above the same island area to optimize Optimize its display performance and increase design flexibility.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

The following will clearly illustrate the spirit of the disclosure with drawings and detailed descriptions. Anyone with ordinary knowledge in the technical field can change and modify it by the technology taught in the disclosure after understanding the embodiments of the disclosure. It does not depart from the spirit and scope of this disclosure.

The terms "first", "second", ... etc. used herein do not refer to a particular order or order, nor are they used to limit the present invention, but are only used to distinguish elements or operations described with the same technical terms.

Regarding the "electrical coupling" used in this article, it can refer to two or more elements that are in direct physical or electrical contact with each other, or indirect physical or electrical contact with each other, and "electrical coupling" can also refer to Two or more elements operate or act on each other.

"Includes", "including", "has", "containing" and so on used in this article are all open terms, meaning including but not limited to.

As used herein, "and/or" refers to any or all combinations of the above things.

Regarding the directional terms used herein, such as: up, down, left, right, front or rear, etc., they are only directions referring to the attached drawings. Accordingly, the directional terms used are for illustration and not for limitation of the case.

The terms "approximately" and "about" used in this article are used to modify any quantity or error that can be slightly changed, but such slight changes or errors will not change its essence.

Regarding terms used in this document, unless otherwise specified, generally have the ordinary meaning of each term used in this field, in this disclosure and in special content. Certain terms used to describe the disclosure are discussed below or elsewhere in this specification to provide those skilled in the art with additional guidance in describing the disclosure.

A specific embodiment according to the present invention is a stretched display. In this embodiment, the stretched display can be deformed by stretching, so it can operate in an unstretched state and a stretched state and can switch between the two states. The stretched display may be a micro-light-emitting diode (uLED) display or an organic light-emitting diode (OLED) display, and it includes a plurality of island regions and a plurality of light-emitting sources correspondingly arranged above it, but not in this way limit.

Please refer to FIG. 2A and FIG. 2B . FIG. 2A and FIG. 2B are respectively schematic diagrams showing a plurality of island regions in a stretched display operating in a first state (unstretched state) and a second state (stretched state).

As shown in Figure 2A, it is assumed that the stretched display includes nine islands IS1~IS9 and the nine islands IS1~IS9 are arranged in a (3*3) matrix, that is, islands IS1~IS3, islands IS4~IS6 , islands IS7-IS9 are respectively arranged parallel to the first direction (horizontal direction) DR1 and islands IS1, IS4 and IS7, islands IS2, IS5 and IS8, islands IS3, IS6 and IS9 are respectively parallel to the second direction (vertical direction) Direction) DR2 arrangement, but not limited thereto.

When the stretched display operates in the first state (unstretched state) ST1, all the islands IS1~IS9 in the stretched display are parallel to the first direction (horizontal direction) DR1 and the second direction (vertical direction) at the same time. ) DR2.

When the stretched display is stretched and converted from the first state (unstretched state) ST1 to the second state (stretched state) ST2, any two edges of the island regions IS1~IS9 in the stretched display The island regions adjacent to each other in the first direction (horizontal direction) DR1 or the second direction (vertical direction) DR2 (eg, island regions IS1 and IS2 adjacent to each other in the horizontal direction or island regions IS1 and IS4 adjacent to each other in the vertical direction) ) will rotate by the same included angle K in the opposite first rotation direction (for example, clockwise direction) CW and the second rotation direction (for example, counterclockwise direction) CCW respectively.

In other words, when the stretched display is stretched and converted from the first state (unstretched state) ST1 to the second state (stretched state) ST2, the island regions IS1, IS3, IS5, IS7, IS9 will be The angle K is rotated in the first rotation direction (clockwise direction) CW and the islands IS2 , IS4 , IS6 , IS8 are rotated by the angle K in the second rotation direction (counterclockwise direction) CCW.

Therefore, if viewed from the perspective of the islands IS1 and IS2, in the second state (stretched state) ST2, the islands IS1 and IS2 will rotate in the opposite first rotation direction (for example, clockwise direction) CW and the second rotation direction respectively. (For example, the counterclockwise direction) CCW has the same included angle K with the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2.

Similarly, if viewed from the perspective of the islands IS1 and IS4, in the second state (stretched state) ST2, the islands IS1 and IS2 will rotate in the opposite first rotation direction (for example, clockwise direction) CW and second rotation respectively. The direction (eg, counterclockwise direction) CCW has the same included angle K as the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2 .

It should be noted that the first rotation direction and the second rotation direction can also be counterclockwise and clockwise, and the angle K can be adjusted according to actual needs, and there is no specific limitation.

Referring to FIG. 3 , the stretched display 3 includes island areas IS1 - IS9 and light sources LU1 - LU9 . The islands IS1-IS9 and the light sources LU1-LU9 are all arranged in a (3*3) matrix, but not limited thereto. Island areas IS1~IS3, island areas IS4~IS6, island areas IS7~IS9 are respectively arranged along the first direction (horizontal direction) DR1 and island areas IS1, IS4 and IS7, island areas IS2, IS5 and IS8, island areas IS3, IS6 and IS9 are respectively arranged along the second direction (vertical direction) DR2. The light sources LU1~LU3, the light sources LU4~LU6, and the light sources LU7~LU9 are respectively arranged along the first direction (horizontal direction) DR1 and the light sources LU1, LU4, and LU7, the light sources LU2, LU5, and LU8, and the light sources LU3, LU6 and LU9 are respectively arranged along the second direction (vertical direction) DR2.

The plurality of light emitting sources LU1-LU9 are correspondingly disposed above the plurality of island areas IS1-IS9. In other words, the light source LU1 is correspondingly arranged above the island area IS1, the light source LU2 is correspondingly arranged above the island area IS2, the light source LU3 is correspondingly arranged above the island area IS3, and so on.

Please refer to Figure 4. FIG. 4 is a schematic diagram illustrating the transformation of a plurality of island regions and a plurality of light sources in a stretched display from a first state (unstretched state) to a second state (stretched state).

As shown in FIG. 4 , if the stretchable display 4 includes four island areas IS1 - IS4 and four light sources LU1 - LU4 , and the light sources LU1 - LU4 are correspondingly disposed above the island areas IS1 - IS4 . In other words, the light source LU1 is disposed above the island IS1, the light source LU2 is disposed above the island IS2, the light source LU3 is disposed above the island IS3, and the light source LU4 is disposed above the island IS4.

When the stretched display 4 operates in the first state (unstretched state) ST1, the plurality of island regions IS1-IS4 are arranged parallel to the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2, and The light-emitting sources LU1-LU4 located above the island areas IS1-IS4 are aligned with the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2 in the counterclockwise direction, clockwise direction, clockwise direction and counterclockwise direction respectively. have the same angle K between them.

When the stretched display 4 is stretched to switch from the first state (unstretched state) ST1 to the second state (stretched state) ST2, the island regions IS1~IS4 and the light sources LU1~ LU4 rotates clockwise, counterclockwise, counterclockwise and clockwise by the same included angle K, respectively.

Therefore, in the second state (stretched state) ST2, the light sources LU1-LU4 are arranged parallel to the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2, and the island regions IS1-IS4 are respectively The clockwise direction, the counterclockwise direction, the counterclockwise direction and the clockwise direction have the same angle K between the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2 .

In other words, during the transition from the first state (unstretched state) ST1 to the second state (stretched state) ST2, if the island area IS1 and the light source LU1 are also rotated by the same angle K in the clockwise direction, then along In the first direction (horizontal direction) DR1, the island area IS2 and the light source LU2 disposed adjacent to the island area IS1 and the light source LU1 will rotate in the opposite counterclockwise direction by the same angle K, and in the second direction (vertical direction) DR2 The island area IS3 and the light source LU3 adjacent to the island area IS1 and the light source LU1 will also rotate by the same angle K in the opposite counterclockwise direction. Since the island area IS4 and the light source LU4 are arranged adjacent to the island area IS3 and the light source LU3 along the first direction (horizontal direction) DR1, and are arranged adjacent to the island area IS2 and the light source LU2 along the second direction (vertical direction) DR2 , therefore, the island area IS4 and the light source LU4 rotate clockwise by the same angle K.

As shown in FIG. 5, in another embodiment, when the stretched display 5 operates in the first state (unstretched state) ST1, the island regions IS1-IS4 are parallel to the first direction (horizontal direction) DR1 and the second direction. The two directions (vertical direction) DR2 are arranged, and the light sources LU1~LU4 located above the island areas IS1~IS4 are respectively aligned with the first direction (horizontal direction) DR1 in a clockwise direction, a counterclockwise direction, a counterclockwise direction and a clockwise direction. There is an angle K between them and the second direction (vertical direction) DR2.

When the stretched display 5 is stretched to switch from the first state (unstretched state) ST1 to the second state (stretched state) ST2, the island regions IS1~IS4 and the light sources LU1~ LU4 all rotate counterclockwise, clockwise, clockwise and counterclockwise by the same included angle K.

Therefore, in the second state (stretched state) ST2, the light sources LU1-LU4 are arranged parallel to the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2, and the island regions IS1-IS4 are respectively The counterclockwise direction, the clockwise direction, the clockwise direction and the counterclockwise direction have the same angle K between the first direction (horizontal direction) DR1 and the second direction (vertical direction) DR2 .

In other words, during the transition from the first state (unstretched state) ST1 to the second state (stretched state) ST2, if the island area IS1 and the light source LU1 are also rotated by an angle K in the counterclockwise direction, along the first The island area IS2 and the light source LU2 arranged adjacent to the island area IS1 and the light source LU1 in the direction (horizontal direction) DR1 will rotate in the opposite clockwise direction by the same angle K, and along the second direction (vertical direction) DR2 and the island area The island area IS3 and the light source LU3 adjacent to the area IS1 and the light source LU1 also rotate by the same angle K in the opposite clockwise direction. Since the island area IS4 and the light source LU4 are arranged adjacent to the island area IS3 and the light source LU3 along the first direction (horizontal direction) DR1, and are arranged adjacent to the island area IS2 and the light source LU2 along the second direction (vertical direction) DR2 , therefore, the island area IS4 and the light source LU4 rotate counterclockwise by the same angle K.

In one embodiment, the stretched display can use micro light-emitting diodes (uLEDs) as its light source, and one or more groups of red (R ), green (G), blue (B) micro light-emitting diodes.

For example, as shown in Figure 6A and Figure 6B, a set of red R, green G, blue B micro light-emitting diodes ML1 or two sets can be arranged on the top of the same island area IS1 in the stretched display. Red R, green G, blue B micro light emitting diodes ML1~ML2, but not limited thereto. In addition, the micro light emitting diodes disposed above the same island area IS1 in the stretched display need not be paired and spare micro light emitting diodes can be additionally disposed, but not limited thereto.

As shown in FIG. 7 , if a group of red R, green G, and blue B micro-light-emitting diodes ML1 to ML4 are respectively arranged above the islands IS1 to IS4 in the stretched display 7, when the stretched display 7 operates in the first In the first state (unstretched state) ST1, the islands IS1~IS4 are parallel to the horizontal direction and the vertical direction, and each group of micro light-emitting diodes ML1~ML4 arranged above the islands IS1~IS4 is arranged counterclockwise, The clockwise direction, the clockwise direction and the counterclockwise direction have the same included angle K with the horizontal direction and the vertical direction.

When the stretched display 7 is stretched to switch from the first state (unstretched state) ST1 to the second state (stretched state) ST2, the islands IS1-IS4 are arranged above the islands IS1-IS4 Each group of micro light emitting diodes ML1-ML4 rotates clockwise, counterclockwise, counterclockwise and clockwise by the same included angle K.

Therefore, in the second state (stretched state) ST2, each group of micro light-emitting diodes ML1~ML4 is parallel to the horizontal direction and the vertical direction, and the island regions IS1~IS4 are arranged in the clockwise direction, counterclockwise direction, and counterclockwise direction respectively. And the clockwise direction has the same included angle K with the horizontal direction and the vertical direction.

In another embodiment, the stretched display can use organic light emitting diodes (OLEDs) as its light source, and the organic light emitting diodes disposed above the same island region can include single-color or multi-color organic light-emitting diodes. body unit. The plurality of OLED units in the OLED can be designed in the same shape or in different shapes.

For example, as shown in FIG. 8A, the organic light-emitting diode OL1 disposed above the island region IS1 includes a single-color (such as red R) organic light-emitting diode unit; The organic light-emitting diode OL1 above includes organic light-emitting diode units of red R, green G, and blue B, and the organic light-emitting diode units of red R, green G, and blue B are all designed in the same shape; As shown in FIG. 8C , the organic light emitting diode OL1 disposed above the island area IS1 in the stretched display includes red R, green G, blue B organic light emitting diode units and blue B organic light emitting diode units. The organic light-emitting diode units of red R and green G are designed in different shapes.

As shown in FIG. 9 , organic light emitting diodes OL1 to OL4 are respectively arranged above the island areas IS1 to IS4 in the stretched display 9, and the organic light emitting diodes OL1 to OL4 include organic light emitting diodes of red R, green G, and blue B respectively. The light-emitting diode unit and the blue B organic light-emitting diode unit are designed in different shapes from the red R and green G organic light-emitting diode units.

When the stretched display 9 operates in the first state (unstretched state) ST1, the islands IS1-IS4 are parallel to the horizontal direction and the vertical direction, and the organic light-emitting diodes OL1 arranged above the islands IS1-IS4 ~OL4 has the same included angle K between the horizontal direction and the vertical direction in the counterclockwise direction, clockwise direction, clockwise direction and counterclockwise direction respectively.

When the stretched display 9 is stretched to switch from the first state (unstretched state) ST1 to the second state (stretched state) ST2, the islands IS1-IS4 are arranged above the islands IS1-IS4 Each of the organic light emitting diodes OL1 - OL4 rotates clockwise, counterclockwise, counterclockwise and clockwise by the same included angle K, respectively.

Therefore, in the second state (stretched state) ST2, the organic light emitting diodes OL1~OL4 are parallel to the horizontal direction and the vertical direction, and the island regions IS1~IS4 are arranged in the clockwise direction, counterclockwise direction, counterclockwise direction and The clockwise direction has the same included angle K as the horizontal direction and the vertical direction.

It should be noted that, in the second state (stretched state) ST2, since the stretched display 9 is stretched and deformed, its pixel density is reduced, and the organic light emitting diodes disposed above the island regions IS1-IS4 The organic light-emitting diode units of blue B in OL1~OL4 are all located at the same position (for example, the left position), and the macroscopic view may form vertical blue lines in the screen, resulting in poor image quality.

Therefore, in order to improve the image quality, as shown in FIG. 9 , the positions of the blue B organic light emitting diode units in different organic light emitting diodes OL1-OL4 can be staggered, for example, the organic light emitting diode OL1 and the The organic light-emitting diode unit of blue B in OL4 is arranged on the left side and the organic light-emitting diode unit of blue B in organic light-emitting diodes OL2 and OL3 is arranged on the right side, so that the macroscopic view does not appear Forms vertical blue lines in the picture to improve image quality, but not limited to.

Compared with the prior art, the stretched display according to the present invention can be deformed by stretching, and it only needs to rotate its light source and/or islands correspondingly during the conversion process between the unstretched state and the stretched state It can be realized without setting a stretching area occupying a large area, so the pixel density (PPI) of the display panel can be effectively improved. In addition, the stretched display of the present invention can use micro light emitting diodes (uLED) or organic light emitting diodes (OLED) as the light source according to actual needs, and can change the design of the light source arranged above the same island area to optimize Optimize its display performance and increase design flexibility.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone skilled in this art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be defined by the appended patent application scope.

1: Stretch display 10: Island District 12: Stretch zone IS1~IS9: Island area DR1: first direction DR2: Second direction ST1: first state ST2: second state CW: Clockwise CCW: Counterclockwise K: included angle 3: Stretch display LU1~LU9: Light source 4: Stretch display 5: Stretch display ML1~ML4: micro light emitting diodes R: red G: Green B: blue 7: Stretch display OL1~OL4: Organic Light Emitting Diodes 9: Stretch display

The accompanying drawings of the present invention are described as follows: 1A and 1B are schematic diagrams of a conventional stretched display. FIG. 2A and FIG. 2B are respectively schematic diagrams showing a plurality of island regions operating in a first state (unstretched state) and a second state (stretched state) in the stretched display of the present invention. FIG. 3 is a schematic diagram showing that the stretched display of the present invention includes a plurality of island regions and a plurality of light emitting sources. Fig. 4 and Fig. 5 respectively illustrate the transition from the first state (unstretched state) to the second state (stretched state) of the plurality of island regions and the plurality of light-emitting sources in the stretched display of the present invention after being stretched Schematic diagrams of different embodiments. FIGS. 6A and 6B are respectively schematic diagrams showing that one or two sets of micro light emitting diodes (uLEDs) can be disposed above the same island region in the stretched display of the present invention as its light source. Fig. 7 shows the transition from the first state (unstretched state) to the second state (stretched state) of a plurality of island regions and a plurality of groups of micro light-emitting diodes arranged above them in the stretched display of the present invention schematic diagram. 8A and FIG. 8B are respectively schematic diagrams showing the organic light emitting diodes disposed above the island regions in the stretched display according to the present invention, including single-color and multi-color organic light-emitting diode units. FIG. 8C is a schematic diagram of a design in which the red, green, and blue OLED units included in the organic light emitting diode disposed above the island region in the stretched display have different shapes. Fig. 9 shows the transition from the first state (unstretched state) to the second state (stretched state) of the plurality of island regions and the plurality of organic light-emitting diodes disposed thereon in the stretched display of the present invention Afterwards, blue organic light emitting diode units can also be disposed on different island regions and arranged in a staggered manner to improve the image quality.

4: Stretch display

IS1~IS4: Island area

LU1~LU4: light source

ST1: first state

ST2: second state

K: included angle

DR1: first direction

DR2: Second direction

Claims (11)

A stretched display, including: a plurality of islands (Island); and a plurality of luminous sources (Luminous sources), which are correspondingly arranged above the plurality of islands; wherein, when the stretched display operates on a first state, a first island area and a second island area adjacently arranged among the plurality of island areas are parallel to a specific direction, and among the plurality of light emitting sources adjacently arranged between the first island area and the second island area A first light source and a second light source above the two islands have the same included angle with the specific direction in a first rotation direction and a second rotation direction opposite to each other; when the stretched display When operating in a second state, the first island area and the second island area have the same angle between the second rotation direction and the first rotation direction and the specific direction, and the first light source The second light source is parallel to the specific direction; the first rotation direction is clockwise and the second rotation direction is counterclockwise, or the first rotation direction is counterclockwise and the second rotation direction is clockwise clockwise direction. The stretchable display according to claim 1, wherein the first state is an unstretched state and the second state is a stretched state. The stretchable display according to claim 1, wherein the specific direction is a horizontal direction or a vertical direction. The stretchable display according to claim 1, wherein the plurality of light emitting sources are micro light emitting diodes (uLEDs). The stretch display according to claim 4, wherein one or more sets of red, green and blue micro-light emitting diodes are arranged above the same island among the plurality of islands. The stretched display according to claim 4, wherein the micro light emitting diodes disposed above the same island of the plurality of islands need not be paired and spare micro light emitting diodes can be provided. The stretchable display according to claim 1, wherein the plurality of light emitting sources are organic light emitting diodes. The stretched display according to claim 7, wherein monochromatic or red, green, blue organic light emitting diodes are arranged above the same island of the plurality of islands. The stretched display according to claim 7, wherein the red, green, and blue organic light emitting diodes disposed above the same island among the plurality of islands are designed in different shapes. The stretched display according to claim 9, wherein in the second state, the blue organic light emitting diodes are disposed on different island regions and arranged in a staggered manner, so as to improve the image quality of blue. A stretched display, including: a plurality of islands (Island); and a plurality of luminous sources (Luminous sources), which are correspondingly arranged above the plurality of islands; wherein, when the stretched display operates on a first state, a first island area and a second island area adjacently arranged among the plurality of island areas are parallel to a specific direction, and among the plurality of light emitting sources adjacently arranged between the first island area and the second island area A first light source and a second light source above the two islands have the same included angle with the specific direction in a first rotation direction and a second rotation direction opposite to each other; when the stretched display When operating in a second state, the first island area and the second island area have a distance between the specific direction and the second rotation direction and the first rotation direction respectively. There is the same angle and the first light source and the second light source are parallel to the specific direction; the plurality of light sources are organic light emitting diodes and are arranged above the same island area in the plurality of island areas. , green, and blue organic light-emitting diodes are designed in different shapes; in the second state, the blue organic light-emitting diodes are arranged on different positions above the islands and arranged in a staggered manner to improve the image quality of blue .

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