TW201318161A - Organic light emitting display - Google Patents

Abstract

An organic light emitting display including a transparent substrate, a mirror layer, a transparent insulating layer and a organic light emitting displaying layer is provided. The mirror layer is disposed on the transparent substrate and has a plurality of openings. The transparent insulating layer is disposed on the transparent substrate and covers the mirror layer. The organic light emitting displaying layer is disposed on the transparent insulating layer and has a plurality of pixel regions. The openings are aligned to the pixel regions respectively. In addition, a manufacturing method of the organic light emitting display is also provided.

Description

Organic light emitting display and method of manufacturing same

The present invention relates to a display and a method of fabricating the same, and more particularly to an organic light emitting display (OLED) and a method of fabricating the same.

Modern people often use mirrors as a tool for sorting out the appearance, but not everyone goes out with a mirror, and the mobile phone is a portable device, so many people have the experience of using the display surface of the mobile phone as a mirror. In general, the display surface of a mobile phone is difficult to reflect images as clearly as a mirror, and the user's needs in this respect cannot be met.

The organic light-emitting display has great application potential due to its self-illumination, no viewing angle dependence, power saving, simple process, low cost, low temperature operating range, high response speed, and full color, and is expected to become the next generation flat panel display. The mainstream. Therefore, if the display surface of the organic electroluminescent display can be further designed to have a mirror-like reflection effect and applied to a mobile phone, the mobile phone equipped with the organic light-emitting display can be more favored by consumers to create business opportunities.

The present invention provides an organic light emitting display that provides the function of a mirror and has good display brightness.

The present invention provides a method of fabricating an organic light emitting display, and an organic light emitting display manufactured by the method can provide a mirror function and have good display brightness. .

The invention provides an organic light emitting display comprising a transparent substrate, a mirror layer, a transparent insulating layer and an organic light emitting display layer. The mirror layer is disposed on the transparent substrate and has a plurality of openings. The transparent insulating layer is disposed on the transparent substrate and covers the mirror layer. The organic light emitting display layer is disposed on the transparent insulating layer and has a plurality of pixel regions. These openings are respectively located in these pixel areas.

In an embodiment of the invention, the material of the mirror layer comprises aluminum or silver.

In an embodiment of the invention, the transparent insulating layer has a flat surface, and the organic light emitting display layer is disposed on a plane.

In an embodiment of the invention, the organic light emitting display layer includes a plurality of first electrodes, a plurality of organic light emitting materials, a patterned partition wall, and a plurality of second electrodes. These first electrodes are disposed on the transparent insulating layer. These organic light-emitting materials are disposed on the first electrodes and located in the pixel regions. The patterned spacers are disposed on the transparent insulating layer to separate the organic light-emitting materials. The second electrodes are disposed on the organic light-emitting materials, wherein the plurality of overlapping regions of the first electrodes and the second electrodes are respectively located at the openings.

In an embodiment of the present invention, the organic light-emitting display further includes a cover disposed on the transparent insulating layer, wherein a sealed space is formed between the cover and the transparent insulating layer, and the first electrodes and the organic light-emitting materials are formed. The patterned partition wall and the second electrodes are located in the sealed space.

In an embodiment of the invention, the organic light emitting display further includes a desiccant disposed in the cover and located in the sealed space.

The invention provides a method of manufacturing an organic light emitting display. First, a transparent substrate is provided. Next, a mirror layer is formed on the transparent substrate, wherein the mirror layer has a plurality of openings. A transparent insulating layer is formed on the transparent substrate, wherein the transparent insulating layer covers the mirror layer. Forming an organic light emitting display layer on the transparent insulating layer, wherein the organic light emitting display layer has a plurality of pixel regions, and the openings are respectively located in the pixel regions.

In an embodiment of the invention, the step of forming the mirror layer on the transparent substrate comprises an evaporation process.

In an embodiment of the invention, the transparent insulating layer has a flat surface, and the step of forming the organic light emitting display layer on the transparent insulating layer comprises forming the organic light emitting display layer on a plane.

In an embodiment of the invention, the step of forming the organic light emitting display layer on the transparent insulating layer comprises: forming a plurality of first electrodes on the transparent insulating layer. A patterned spacer is formed on the transparent insulating layer. A plurality of organic luminescent materials are formed on the first electrodes, wherein the patterned spacers are used to separate the organic luminescent materials, and the organic luminescent materials are located in the pixel regions. A plurality of second electrodes are formed on the organic light-emitting materials, wherein a plurality of overlapping regions of the first electrodes and the second electrodes are respectively located at the openings.

In an embodiment of the present invention, the method for fabricating the organic light emitting display further includes forming a cover on the transparent insulating layer, wherein a sealed space is formed between the cover and the transparent insulating layer, and the first electrodes, the organic The luminescent material, the patterned spacer and the second electrodes are located within the sealed space.

In an embodiment of the invention, the method for fabricating the organic light emitting display further includes forming a desiccant in the cover, wherein the desiccant is located in the sealed space.

Based on the above, in the organic light emitting display of the present invention, the transparent substrate has a mirror layer, and the openings of the mirror layer are respectively located in the pixel regions of the organic display layer. The OLED display can reflect the image by the mirror layer, and the light emitted by the organic light-emitting display layer from the pixel regions can pass through the transparent substrate and reach the outside through the openings of the mirror layer. Thereby, the organic light emitting display can provide the function of a mirror and has good display brightness.

The above described features and advantages of the present invention will be more apparent from the following description.

1 is a cross-sectional view of an organic light emitting display according to an embodiment of the present invention. Referring to FIG. 1 , the organic light emitting display 100 of the present embodiment includes a transparent substrate 110 , a mirror layer 120 , a transparent insulating layer 130 , and an organic light emitting display layer 140 . The mirror layer 120 is disposed on the transparent substrate 130 and has a plurality of openings 122. The transparent insulating layer 130 is disposed on the transparent substrate 130 and covers the mirror layer 120. The organic light emitting display layer 140 is disposed on the transparent insulating layer 130 and has a plurality of pixel regions 140a. These openings 122 are respectively located in these pixel regions 140a.

Under the above configuration, the organic light emitting display 100 can perform image reflection by the mirror layer 120, and the light L emitted from the pixel regions 140a of the organic light emitting display layer 140 can pass through the openings 122 of the mirror layer 130. The transparent substrate 110 reaches the outside world. Thereby, the organic light emitting display 100 can provide the function of a mirror and has a good display brightness. The organic light emitting display 100 of the present embodiment can be applied to a mobile phone for its display interface, and the user can use the mobile phone that is carried around as a mirror to make the function of the mobile phone more diverse.

In detail, each of the pixel regions 140a is, for example, a sub-pixel generally referred to as a sub-pixel, and the sub-pixel is divided into a red sub-pixel, a green sub-pixel, and a blue sub-pixel. In this embodiment, the partial pixel area 140a is a red sub-pixel, the partial pixel area 140a is a green sub-pixel, and the partial pixel area 140a is a blue sub-pixel, a red sub-pixel, a green sub-pixel and a blue sub-pixel. A complete pixel (pixel).

In this embodiment, by the arrangement of the transparent insulating layer 130, the conductive layer of the mirror layer 120 and the organic light emitting display layer 140 can be prevented from affecting the normal operation of the organic light emitting display 100. In addition, the transparent insulating layer 130 has a flat surface 132, and the organic light emitting display layer 140 is disposed on the plane 132 provided by the transparent insulating layer 130.

2 is a partial plan view of the mirror layer of FIG. 1. 3 is a partial plan view of the first electrode and the second electrode of FIG. 1. Referring to FIG. 1 to FIG. 3 , in detail, the organic light emitting display layer 140 of the present embodiment includes a plurality of first electrodes 142 , a plurality of organic light emitting materials 144 , a patterned isolation wall 146 , and a plurality of second electrodes 148 . These first electrodes 142 are disposed on the transparent insulating layer 130. These organic light-emitting materials 144 are disposed on the first electrodes 142 and located in the pixel regions 140a. The patterned spacers 146 are disposed on the transparent insulating layer 130 to partition the organic light-emitting materials 144. The second electrodes 148 are disposed on the organic light-emitting materials 144, wherein the first electrodes 142 and the plurality of overlapping regions 140b of the second electrodes 148 are respectively located at the openings 122. In other words, the overlapping regions 140b are respectively located in the pixel regions 140a, and the organic light-emitting materials 144 are respectively located in the overlapping regions 140b and electrically connected to the first electrodes 142 and the second electrodes 148.

In this embodiment, the material of the mirror layer 120 is, for example, aluminum, silver or other high reflectivity materials. The material of the transparent substrate 110 may be glass, plastic or a flexible material. The material of the first electrode 142 and the second electrode 148 is, for example, a metal, a metal oxide, a metal nitride, a metal oxynitride or the like. Each of the organic light-emitting materials is, for example, an organic light-emitting material of white light or other color light.

Referring to FIG. 1 , in an embodiment, the organic light emitting display 100 further includes a cover 150 and a desiccant 160. The cover 150 is disposed on the transparent insulating layer 130, and a seal is formed between the cover 150 and the transparent insulating layer 130. The space 150a and the desiccant 160 are disposed in the lid 150 and located in the sealed space 150a. The first electrode 142, the organic light-emitting material 144, the patterned partition wall 146 and the second electrode 148 are located in the sealed space 150a to prevent the external moisture from contacting the organic light-emitting display layer 140 to affect its normal operation.

Hereinafter, a method of manufacturing the organic light emitting display 100 of FIG. 1 will be described by way of illustration. 4A to 4G are flowcharts showing a method of manufacturing the organic light emitting display of FIG. 1. Referring to FIG. 4A, first, a transparent substrate 110 is provided. Next, referring to FIG. 4B, a mirror layer 120 is formed on the transparent substrate 110. The mirror layer 120 has a plurality of openings 122. The manner of forming the mirror layer 120 is, for example, an evaporation process. Referring to FIG. 4C, a transparent insulating layer 130 is formed on the transparent substrate 110, wherein the transparent insulating layer 130 covers the mirror layer 120 and has a plane 132.

Referring to FIG. 4D, a plurality of first electrodes 142 (one shown) are formed on the transparent insulating layer 130. Referring to FIG. 4E, a patterned isolation wall 146 is formed on the transparent insulating layer 130. Referring to FIG. 4F, a plurality of organic light-emitting materials 144 are formed on the first electrodes 142, wherein the patterned partition walls 146 are used to partition the organic light-emitting materials 144, and the positions of the organic light-emitting materials are a pixel region 140a. Referring to FIG. 4G, a plurality of second electrodes 148 are formed on the organic light-emitting materials 144, wherein the first electrodes 142 and the plurality of overlapping regions 140b of the second electrodes 148 (shown in FIG. 3) are respectively located Opening 122. At this time, the configuration of the organic light emitting display layer 140 is completed. The organic light emitting display layer 140 is disposed on the plane 132 of the transparent insulating layer 130 and includes the first electrode 142, the organic light emitting material 144, the patterned partition wall 146, and the second electrode 148.

As shown in FIG. 4E, the patterned spacers 146 have a height difference from the first electrodes 142, and the cross-section of the patterned spacers 146 is, for example, an inverted trapezoid. Thus, FIG. 4F is formed by, for example, sputtering or other common deposition processes of the organic light-emitting material 144 that is deposited on the patterned spacer wall 146 during processing and deposited on these first portions. The organic luminescent material 144 on the electrode 142 is naturally broken to avoid unintended electrical connections between the organic luminescent materials 144. Similarly, the second electrode 148 formed by, for example, sputtering or other common deposition processes of FIG. 4G, which is deposited on the patterned spacer wall 146 during the process, is deposited on the organic light-emitting material 144. The second electrode 148 is naturally disconnected to avoid unintended electrical connections between the second electrodes 148.

Finally, referring to FIG. 1, a cover 150 is formed on the transparent insulating layer 130, and a desiccant 160 is formed on the cover 150. A sealing space 150a is formed between the cover 150 and the transparent insulating layer 130. The desiccant 160, the first electrodes 142, the organic light-emitting materials 144, the patterned partition wall 146 and the second electrodes 148 are located in the sealed space 150a. The external moisture is prevented from contacting the organic light-emitting display layer 140 to affect its normal operation. .

In summary, in the organic light emitting display of the present invention, the transparent substrate has a mirror layer, and the openings of the mirror layer are respectively located in the pixel regions of the organic display layer. The OLED display can reflect the image by the mirror layer, and the light emitted by the organic light-emitting display layer from the pixel regions can pass through the transparent substrate and reach the outside through the openings of the mirror layer. Thereby, the organic light emitting display can provide the function of a mirror and has good display brightness.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100. . . Organic light emitting display

110. . . Transparent substrate

120. . . Mirror layer

122. . . Opening

130. . . Transparent insulation

132. . . flat

140. . . Organic light emitting display layer

140a. . . Pixel area

140b. . . Overlapping part

142. . . First electrode

144. . . Organic luminescent material

144’, 148’. . . section

146. . . Patterned partition

148. . . Second electrode

150. . . Cover

150a. . . Sealed space

160. . . Desiccant

L. . . Light

1 is a cross-sectional view of an organic light emitting display according to an embodiment of the present invention.

2 is a partial plan view of the mirror layer of FIG. 1.

3 is a partial plan view of the first electrode and the second electrode of FIG. 1.

4A to 4G are flowcharts showing a method of manufacturing the organic light emitting display of FIG. 1.

100. . . Organic light emitting display

110. . . Transparent substrate

120. . . Mirror layer

122. . . Opening

130. . . Transparent insulation

140. . . Organic light emitting display layer

140a. . . Pixel area

142. . . First electrode

144. . . Organic luminescent material

144’, 148’. . . section

146. . . Patterned partition

148. . . Second electrode

150. . . Cover

150a. . . Sealed space

160. . . Desiccant

L. . . Light

Claims (12)

An organic light emitting display, comprising: a transparent substrate; a mirror layer disposed on the transparent substrate and having a plurality of openings; a transparent insulating layer disposed on the transparent substrate and covering the mirror layer; and an organic light emitting display layer And disposed on the transparent insulating layer and having a plurality of pixel regions, wherein the openings are respectively located in the pixel regions. The organic light emitting display according to claim 1, wherein the material of the mirror layer comprises aluminum or silver. The OLED display of claim 1, wherein the transparent insulating layer has a plane, and the organic light emitting display layer is disposed on the plane. The organic light-emitting display of claim 1, wherein the organic light-emitting display layer comprises: a plurality of first electrodes disposed on the transparent insulating layer; and a plurality of organic light-emitting materials disposed on the first electrodes And the pixel is disposed on the transparent insulating layer to separate the organic light-emitting materials; and the plurality of second electrodes are disposed on the organic light-emitting materials, wherein the A plurality of overlapping regions of the first electrode and the second electrodes are respectively located at the openings. The OLED display of claim 4, further comprising: a cover disposed on the transparent insulating layer, wherein a sealed space is formed between the cover and the transparent insulating layer, the first electrodes The organic light-emitting materials, the patterned partition walls and the second electrodes are located in the sealed space. The organic light emitting display of claim 5, further comprising: a desiccant disposed in the cover and located in the sealed space. A method for manufacturing an organic light emitting display, comprising: providing a transparent substrate; forming a mirror layer on the transparent substrate, wherein the mirror layer has a plurality of openings; forming a transparent insulating layer on the transparent substrate, wherein the transparent insulating layer Covering the mirror layer; and forming an organic light emitting display layer on the transparent insulating layer, wherein the organic light emitting display layer has a plurality of pixel regions, and the openings are respectively located in the pixel regions. The method of manufacturing an organic light emitting display according to claim 7, wherein the step of forming the mirror layer on the transparent substrate comprises an evaporation process. The method for manufacturing an organic light emitting display according to claim 7, wherein the transparent insulating layer has a flat surface, and the step of forming the organic light emitting display layer on the transparent insulating layer comprises: forming the organic light emitting display layer on flat surface. The method for fabricating an organic light emitting display according to claim 7, wherein the step of forming the organic light emitting display layer on the transparent insulating layer comprises: forming a plurality of first electrodes on the transparent insulating layer; forming a pattern Forming a plurality of organic light-emitting materials on the first electrodes, wherein the patterned spacers are used to partition the organic light-emitting materials, wherein the organic light-emitting materials are located in the pixel regions And forming a plurality of second electrodes on the organic luminescent materials, wherein the plurality of overlapping regions of the first electrodes and the second electrodes are respectively located at the openings. The method for manufacturing an organic light emitting display according to claim 10, further comprising: forming a cover on the transparent insulating layer, wherein a sealing space is formed between the cover and the transparent insulating layer, An electrode, the organic light-emitting materials, the patterned partition wall and the second electrodes are located in the sealed space. The method of manufacturing an organic light emitting display according to claim 11, further comprising: forming a desiccant in the cover, wherein the desiccant is located in the sealed space.