Patent Description:
Flat panel display (FPD) devices have found wide use in various electronic devices, because the flat panel display device is lightweight and thin as compared to a cathode-ray tube (CRT) display device. Typical examples of a flat panel display device are a liquid crystal display (LCD) device and an organic light emitting diode (OLED) display device. Compared to the LCD, the OLED has many advantages such as a higher luminance and a wider viewing angle. In addition, the OLED display device can be made thinner because the OLED display device does not require a backlight. In the OLED display device, electrons and holes are injected into an organic thin layer through a cathode and an anode, and then recombined in the organic thin layer to generate excitons, thereby generating light of a certain wavelength.

Recently, a mirror OLED device capable of reflecting an image of an object (or target) that is located in the front of the OLED device by including a reflective member has been developed. In addition, an OLED device having a mirror function and a touch function has been developed. The reflective member may be disposed in a display area and a peripheral area surrounding the display area.

However, a reflectivity of a reflective member disposed in the display area may be different from a reflectivity of a reflective member disposed in the peripheral area. Thus, the reflective member disposed in the peripheral area may be seen as separate from the reflective member disposed in the display area.

<CIT> discloses an organic light emitting display device which includes a substrate, a light emitting structure, and a reflective metal layer.

<CIT> relates to a mirror type display apparatus.

<CIT> relates to an organic light emitting display device capable of taking photographs using external light without any image displayed on the screen.

<CIT> relates to an active matrix display device.

<CIT> relates to a bottom emission type organic light emitting display device in which a pattern and an outer line of a display panel are not shown.

<CIT> relates to an organic light-emitting device for resolving the broken electrode issue and increasing the light-emitting area.

<CIT> relates to an OLED, which can provide a function of a mirror and has good display brightness.

<CIT> relates to an organic light-emitting display apparatus that may realize a mirror function and a touch sensing function while not deteriorating display quality and efficiency.

According to an aspect of the invention, there is provided an organic light emitting display device as set out in claim <NUM>.

According to another aspect of the invention, there is provided a method of manufacturing an organic light emitting display device as set out in claim <NUM>.

Hereinafter, the present inventive concept will be explained in detail with reference to the accompanying drawings. The various Figures are not necessarily to scale. All numerical values are approximate, and may vary. All examples of specific materials and compositions are to be taken as non-limiting and exemplary only. Other suitable materials and compositions may be used instead.

<FIG> is a plan view illustrating an organic light emitting display device. <FIG> is a cross-sectional view taken along the line I-I' and the line II-II' of <FIG>.

Referring to <FIG> and <FIG>, an organic light emitting display device includes a display area DA and a peripheral area PA.

An organic light emitting display includes a light-emitting region A and a reflection region B. Pixels <NUM>, <NUM> and <NUM> are positioned in the light-emitting region A. For example, the pixel <NUM> may be a pixel emitting a red color, the pixel <NUM> may be a pixel emitting a green color, and the pixel <NUM> may be a pixel emitting a blue color.

A reflective member <NUM> is disposed in the reflection region B. The reflective member <NUM> includes a first reflective portion <NUM> disposed in the display area DA and a second reflective portion <NUM> disposed in the peripheral area PA. The first reflective portion <NUM> is integrally formed with the second reflective portion <NUM>.

The reflective member <NUM> may include a material having predetermined reflectivity. For example, the reflective member <NUM> may include gold (Au), silver (Ag), aluminum (Al), magnesium (Mg), platinum (Pt), Nickel (Ni), titanium (Ti), etc. Alternatively, the reflective member <NUM> may be formed of an alloy, metal nitride, conductive metal oxide, etc. For example, the reflective member <NUM> may include an alloy containing aluminum, aluminum nitride (AlNx), an alloy containing silver, tungsten nitride (WNx), an alloy containing copper, chrome nitride (CrNx), an alloy containing molybdenum, titanium nitride (TiNx), tantalum nitride (TaNx), strontium ruthenium oxide (SRO), zinc oxide (ZnOx), stannum (tin) oxide (SnOx), indium oxide (InOx), gallium oxide (GaOx), etc..

The first reflective portion <NUM> has a plurality of first openings <NUM>, <NUM> and <NUM>. The second reflective portion <NUM> has a plurality of second openings. The first openings <NUM>, <NUM> and <NUM> and the second openings <NUM> may have a quadrangular shape. In the inventive organic light emitting device having a mirror function, the second openings <NUM> have a different shape and/or a different size from any of the first openings <NUM>, <NUM> and <NUM> so that the reflectivity of the second reflective portion <NUM> is equal to the reflectivity of the first reflective portion <NUM>.

An organic light emitting display device according to an embodiment includes 7a first substrate <NUM>, a buffer layer <NUM>, a first insulation interlayer <NUM>, a second insulation layer <NUM>, a third insulation layer <NUM>, a light emitting structure, a pixel defining layer <NUM>, a first sensing electrode <NUM>, and a second substrate <NUM>. Here, the light emitting structure includes a switching element <NUM>, a first electrode <NUM>, an emission layer <NUM> and a second electrode <NUM>. The switching element <NUM> includes an active pattern <NUM>, a gate electrode <NUM>, a source electrode <NUM> and a drain electrode <NUM>. The reflective member <NUM> includes the first openings <NUM>, <NUM> and <NUM> formed in the display area and the second openings <NUM> formed in the peripheral area.

The organic light emitting display device <NUM> may include a plurality of pixel regions. One pixel region includes a light-emitting region A and a reflection region B. The reflection region B may substantially surround the light-emitting region A. The switching element <NUM>, the first electrode <NUM>, the emission layer <NUM> and a portion of the second electrode <NUM> may be disposed in the light-emitting region A. However, the switching element <NUM> may be disposed in the reflection region B.

A display image is displayed in light-emitting region A. An image of an object that is located in the front of the organic light emitting display device <NUM> is reflected in the reflection region B.

The light emitting structure is disposed on the first substrate <NUM>. The first substrate <NUM> may be formed of transparent materials. For example, the first substrate <NUM> may include quartz, synthetic quartz, calcium fluoride, fluoride-doped quartz, a soda lime glass, a non-alkali glass etc. Alternatively, the first substrate <NUM> may be formed of a flexible transparent resin substrate. Here, the flexible transparent resin substrate for the first substrate <NUM> may include a polyimide substrate. For example, the polyimide substrate may include a first polyimide layer, a barrier film layer, a second polyimide layer, etc..

When the polyimide substrate is thin and flexible, the polyimide substrate may be formed on a rigid glass substrate to help support the formation of the light emitting structure. That is, in embodiments, the first substrate <NUM> may have a structure in which the first polyimide layer, the barrier film layer and the second polyimide layer are stacked on a glass substrate. Here, after an insulation layer is provided on the second polyimide layer, the light emitting structure (e.g., the switching element <NUM>, a capacitor, the first electrode <NUM>, the light emitting layer <NUM>, the second electrode <NUM>, etc) may be disposed on the insulation layer.

After the light emitting structure is formed on the insulation layer, the glass substrate may be removed. It may be difficult for the light emitting structure to be directly formed on the polyimide substrate, because the polyimide substrate is thin and flexible. Accordingly, the light emitting structure is formed on a rigid glass substrate, and then the polyimide substrate may serve as the first substrate <NUM> after removal of the glass substrate. As the organic light emitting display device <NUM> includes the light-emitting region A and the reflection region B, the first substrate <NUM> may also include the light-emitting region A and the reflection region B.

A buffer layer <NUM> may be disposed on the first substrate <NUM>. The buffer layer <NUM> may extend from the light-emitting region A into the reflection region B. The buffer layer <NUM> may prevent the diffusion (e.g., an out-gassing) of metal atoms and/or impurities from the first substrate <NUM>. Additionally, the buffer layer <NUM> may control a rate of heat transfer in a crystallization process for forming the active pattern <NUM>, thereby obtaining a substantially uniform active pattern <NUM>. Furthermore, the buffer layer <NUM> may improve a surface flatness of the first substrate <NUM> when a surface of the first substrate <NUM> is relatively irregular. According to a type of the first substrate <NUM>, at least two buffer layers may be provided on the first substrate <NUM>, or the buffer layer may not be present.

The switching element <NUM> may include the active pattern <NUM>, the gate electrode <NUM>, the source electrode <NUM>, and the drain electrode <NUM>. For example, the active pattern <NUM> may be disposed on the first substrate <NUM>. The active pattern <NUM> may be formed of an oxide semiconductor, an inorganic semiconductor (e.g., amorphous silicon, polysilicon, etc.), an organic semiconductor, etc..

The first insulation layer <NUM> may be disposed on the active pattern <NUM>. The first insulation layer <NUM> may cover the active pattern <NUM> in the light-emitting region A, and may extend in the first direction on the first substrate <NUM>. That is, the first insulation layer <NUM> may be disposed on substantially the entire first substrate <NUM>. The first insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

The gate electrode <NUM> may be disposed on a portion of the first insulation layer <NUM> under which the active pattern <NUM> is disposed. The gate electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc..

The second insulation layer <NUM> may be disposed on the gate electrode <NUM>. The second insulation layer <NUM> may cover the gate electrode <NUM> in the light-emitting region A, and may extend in the first direction on the first substrate <NUM>. That is, the second insulation layer <NUM> may be disposed on substantially the entire first substrate <NUM>. The second insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

The source electrode <NUM> and the drain electrode <NUM> may be disposed on the second insulation layer <NUM>. The source electrode <NUM> may be in contact with a first side of the active pattern <NUM> by removing a portion of the first and second insulation layers <NUM> and <NUM>. The drain electrode <NUM> may be in contact with a second side of the active pattern <NUM> by removing a second portion of the first and second insulation layers <NUM> and <NUM>. Each of the source electrode <NUM> and the drain electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc..

The third insulation layer <NUM> may be disposed on the source electrode <NUM> and the drain electrode <NUM>. The third insulation layer <NUM> may cover the source electrode <NUM> and the drain electrode <NUM> in the sub-pixel region, and may extend in the first direction on the first substrate <NUM>. That is, the third insulation layer <NUM> may be disposed on substantially the entire first substrate <NUM>. The third insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

The first electrode <NUM> may be disposed on the third insulation layer <NUM>. The first electrode <NUM> may be in contact with the source electrode <NUM> by removing a portion of the third insulation layer <NUM>. That is, the first electrode <NUM> may be electrically connected to the switching element <NUM>. The first electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc..

In the present embodiment, the gate electrode <NUM> is disposed on the active pattern <NUM>. However, the gate electrode <NUM> may instead be disposed under the active pattern <NUM>.

The pixel defining layer <NUM> may be disposed on the third insulation layer <NUM> to expose a portion of the first electrode <NUM>. The pixel defining layer <NUM> may be formed of organic materials or inorganic materials. In this case, the light emitting layer <NUM> may be disposed on a portion of the first electrode <NUM> that is exposed by the pixel defining layer <NUM>.

The light emitting layer <NUM> is disposed on the exposed first electrode <NUM>. The light emitting layer <NUM> is formed using light emitting materials capable of generating different colors of light (e.g., a red color, a blue color, and a green color). However, the present inventive concept is not limited thereto, and the light emitting layer <NUM> may instead stack light emitting materials capable of generating different colors of light, so as to emit white (or other) colored light.

The second electrode <NUM> is disposed on the pixel defining layer <NUM> and the light emitting layer <NUM>. The second electrode <NUM> may cover the pixel defining layer <NUM> and the light emitting layer <NUM> in the light-emitting region A and the reflection region B, and may extend in the first direction on the first substrate <NUM>. That is, the second electrode <NUM> may be electrically connected to the first through third pixels. The second electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, a transparent conductive material, etc. These may be used alone or in any combination thereof. The first substrate <NUM> may be coupled to the second substrate <NUM> by using a sealing member. In addition, a filler may be disposed between the first substrate <NUM> and the second substrate <NUM>.

The reflective member <NUM> includes a material having predetermined reflectivity. For example, the reflective member <NUM> may include gold (Au), silver (Ag), aluminum (Al), magnesium (Mg), platinum (Pt), Nickel (Ni), titanium (Ti), etc. Alternatively, the reflective member <NUM> may be formed of an alloy, metal nitride, conductive metal oxide, etc. For example, the reflective member <NUM> may include an alloy containing aluminum, aluminum nitride (AlNx), an alloy containing silver, tungsten nitride (WNx), an alloy containing copper, chrome nitride (CrNx), an alloy containing molybdenum, titanium nitride (TiNx), tantalum nitride (TaNx), strontium ruthenium oxide (SRO), zinc oxide (ZnOx), stannum oxide (SnOx), indium oxide (InOx), gallium oxide (GaOx), etc..

The second substrate <NUM> and the first substrate <NUM> may include substantially the same materials. For example, the second substrate <NUM> may be formed of quartz, synthetic quartz, calcium fluoride, fluoride-doped quartz, soda lime glass, non-alkali glass, etc. In some example embodiments, the second substrate <NUM> may be formed of a transparent inorganic material or flexible plastic. For example, the second substrate <NUM> may include a flexible transparent resin substrate. In this case, to increase flexibility of the organic light emitting display device <NUM>, the second substrate <NUM> may include a stacked structure where at least one organic layer and at least one inorganic layer are alternately stacked.

<FIG> are cross-sectional views illustrating a method of manufacturing the organic light emitting display device of <FIG>.

Referring to <FIG>, the buffer layer <NUM> is formed on the first substrate <NUM>. Thereafter, the active pattern <NUM> and the first insulation layer <NUM> are formed on the buffer layer <NUM>.

The first substrate <NUM> may include quartz, synthetic quartz, calcium fluoride, fluoride-doped quartz, a soda lime glass, a non-alkali glass, etc..

The first substrate <NUM> may be formed of transparent materials. For example, the first substrate <NUM> may include quartz, synthetic quartz, calcium fluoride, fluoride-doped quartz, a soda lime glass, a non-alkali glass, etc. Alternatively, the first substrate <NUM> may be formed of a flexible transparent resin substrate. Here, the flexible transparent resin substrate for the first substrate <NUM> may include a polyimide substrate. For example, the polyimide substrate may include a first polyimide layer, a barrier film layer, a second polyimide layer, etc. When the polyimide substrate is thin and flexible, it may be formed on a rigid glass substrate to help support the formation of the light emitting structure. That is, in embodiments, the first substrate <NUM> may have a structure in which the first polyimide layer, the barrier film layer and the second polyimide layer are stacked on a glass substrate. Here, after an insulation layer is provided on the second polyimide layer, the light emitting structure (e.g., the switching element <NUM>, a capacitor, the first electrode <NUM>, the light emitting layer <NUM>, the second electrode <NUM>, etc. may be disposed on the insulation layer.

After the light emitting structure is formed on the insulation layer, the glass substrate may be removed. It may be difficult that the light emitting structure is directly formed on the polyimide substrate because the polyimide substrate is thin and flexible. Accordingly, the light emitting structure may be formed on a rigid glass substrate, and then the polyimide substrate may serve as the first substrate <NUM> after the of the glass substrate. As the organic light emitting display device <NUM> includes the light-emitting region A and the reflection region B, the first substrate <NUM> also includes the light-emitting region A and the reflection region B.

A buffer layer <NUM> may be disposed on the first substrate <NUM>. The buffer layer <NUM> may extend from the light-emitting region A into the reflection region B. The buffer layer <NUM> may prevent the diffusion (e.g., out-gassing) of metal atoms and/or impurities from the first substrate <NUM>. Additionally, the buffer layer <NUM> may control a rate of heat transfer in a crystallization process for forming the active pattern <NUM>, thereby obtaining a substantially uniform active pattern <NUM>. Furthermore, the buffer layer <NUM> may improve a surface flatness of the first substrate <NUM> when a surface of the first substrate <NUM> is relatively irregular. According to a type of the first substrate <NUM>, at least two buffer layers may be provided on the first substrate <NUM>, or the buffer layer may not be present.

The active pattern <NUM> may be formed of an oxide semiconductor, an inorganic semiconductor (e.g., amorphous silicon, polysilicon, etc.), an organic semiconductor, etc..

Referring to <FIG>, the gate electrode <NUM>, a metal line <NUM> and the second insulation layer <NUM> are formed on the first substrate <NUM> after the first insulation layer <NUM> is formed.

The metal line <NUM> may be disposed on the same layer as the gate electrode <NUM>. The metal line <NUM> may include the same material as the gate electrode <NUM>. The metal line <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc. The metal line <NUM> may be a line, a circuit or a common line electrically connected to the switching element <NUM>. However, the present inventive concept is not limited thereto, and the metal line <NUM> may instead, for example, be disposed on the same layer as the source electrode <NUM> and the drain electrode <NUM>.

The second insulation layer <NUM> may be disposed on the gate electrode <NUM>. The second insulation layer <NUM> may cover the gate electrode <NUM> in the light-emitting region A, and may extend in the first direction on the first substrate <NUM>. That is, the second insulation layer <NUM> may be disposed on the entire first substrate <NUM>. The second insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

Referring to <FIG>, the source electrode <NUM> and the drain electrode <NUM> are formed on the first substrate <NUM> after the second insulation layer <NUM> is formed.

The source electrode <NUM> and the drain electrode <NUM> may be disposed on the second insulation layer <NUM>. The source electrode <NUM> may be in contact with a first side of the active layer <NUM> by removing a portion of the first and second insulation layers <NUM> and <NUM>. The drain electrode <NUM> may be in contact with a second side of the active layer <NUM> by removing a second portion of the first and second insulation layers <NUM> and <NUM>. Each of the source electrode <NUM> and the drain electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc..

In the present embodiment, the gate electrode <NUM> is disposed on the active pattern <NUM>. However, the present inventive concept is not limited thereto, and the gate electrode <NUM> may instead, for example, be disposed under the active pattern <NUM>.

Referring to <FIG>, the third insulation layer <NUM> and the first electrode <NUM> are formed on the first substrate <NUM> over the source electrode <NUM> and the drain electrode <NUM>.

The third insulation layer <NUM> may be disposed on the source electrode <NUM> and the drain electrode <NUM>. The third insulation layer <NUM> may cover the source electrode <NUM> and the drain electrode <NUM> in the sub-pixel region A, and may extend in the first direction on the first substrate <NUM>. That is, the third insulation layer <NUM> may be disposed on substantially the entire first substrate <NUM>. The third insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

The first electrode <NUM> may be disposed on the third insulation layer <NUM>. The first electrode <NUM> may be in contact with the source electrode <NUM> by removing a portion of the third insulation layer <NUM>. In addition, the first electrode <NUM> may be electrically connected to the switching element <NUM>. The first electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc..

Referring to <FIG>, the pixel defining layer <NUM>, the light emitting layer <NUM> and the second electrode <NUM> are formed on the first substrate <NUM> over the first electrode <NUM>.

The pixel defining layer <NUM> may be disposed on the third insulation layer <NUM> to expose a portion of the first electrode <NUM>. The pixel defining layer <NUM> may be formed of organic materials or inorganic materials. In this case, the light emitting layer <NUM> may be disposed on the portion of first electrode <NUM> that is exposed by the pixel defining layer <NUM>.

The light emitting layer <NUM> is disposed on the exposed first electrode <NUM>. The light emitting layer <NUM> is formed using light emitting materials capable of generating different colors of light (e.g., a red color, a blue color, and a green color). However, the present inventive concept is not limited thereto, and the light emitting layer <NUM> may instead stack light emitting materials capable of generating different colors of light, so as to emit white or other colored light.

The second electrode <NUM> may be disposed on the pixel defining layer <NUM> and the light emitting layer <NUM>. The second electrode <NUM> may cover the pixel defining layer <NUM> and the light emitting layer <NUM> in the light-emitting region A and the reflection region B, and may extend in the first direction on the first substrate <NUM>. That is, the second electrode <NUM> may be electrically connected to the first through third pixels <NUM>, <NUM> and <NUM>. The second electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, a transparent conductive material, etc. These may be used alone or in any combination thereof.

The pixel defining layer <NUM> and the second electrode <NUM> may not be formed in (i.e. may be removed from) the peripheral area PA. However, the present inventive concept is not limited thereto, at least one of the pixel defining layer <NUM> and the second electrode <NUM> may be formed in the peripheral area PA or at least portion of the peripheral area PA.

Referring to <FIG>, the reflective member <NUM> is formed on the second substrate <NUM>.

The second substrate <NUM> and the first substrate <NUM> may include substantially the same materials. For example, the second substrate <NUM> may be formed of quartz, synthetic quartz, calcium fluoride, fluoride-doped quartz, soda lime glass, non-alkali glass, etc..

The reflective member <NUM> includes a first reflective portion <NUM> disposed in the display area DA, and a second reflective portion <NUM> disposed in the peripheral area PA. The first reflective portion <NUM> is integrally formed with the second reflective portion <NUM>.

The reflective member <NUM> may include a material having predetermined reflectivity. For example, the reflective member <NUM> may include gold (Au), silver (Ag), aluminum (Al), magnesium (Mg), platinum (Pt), Nickel (Ni), titanium (Ti), etc. Alternatively, the reflective member <NUM> may be formed of an alloy, metal nitride, conductive metal oxide, etc. For example, the reflective member <NUM> may include an alloy containing aluminum, aluminum nitride (AlNx), an alloy containing silver, tungsten nitride (WNx), an alloy containing copper, chrome nitride (CrNx), an alloy containing molybdenum, titanium nitride (TiNx), tantalum nitride (TaNx), strontium ruthenium oxide (SRO), zinc oxide (ZnOx), stannum oxide (SnOx), indium oxide (InOx), gallium oxide (GaOx), etc..

The first reflective portion <NUM> has a plurality of first openings <NUM>, <NUM> and <NUM>. The second reflective portion <NUM> has a plurality of second openings <NUM> For example, the first openings <NUM>, <NUM> and <NUM> and the second openings <NUM> may have a quadrangular shape. In the inventive method of forming an organic light emitting display device having mirror function, the second openings <NUM> have a different shape and/or a different size from the first openings <NUM>, <NUM> and <NUM> so that the reflectivity of the second reflective portion <NUM> is equal to the reflectivity of the first reflective portion <NUM>.

<FIG> is a plan view illustrating an organic light emitting display device. <FIG> is a cross-sectional view taken along the line III-III' and the line IV-IV' of <FIG>.

The organic light emitting display device is substantially the same as the organic light emitting display device of <FIG> and <FIG> except for the presence of a light-blocking pattern <NUM>, and thus same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG> and <FIG>, an organic light emitting display device may include a light-blocking pattern <NUM>.

The light-blocking pattern <NUM> overlaps the metal line <NUM>. The light-blocking pattern <NUM> may be disposed on the same layer as the pixel defining layer <NUM>.

The light-blocking pattern <NUM> may include an opaque material. For example, the light-blocking pattern <NUM> may include a black organic material. The light-blocking pattern <NUM> may include a carbon or a cobalt. Therefore, the light-blocking pattern <NUM> may block light due to reflection by metal wirings.

The reflective member <NUM> includes a first reflective portion <NUM> disposed in the display area DA and a second reflective portion <NUM> disposed in the peripheral area PA. The first reflective portion <NUM> is integrally formed with the second reflective portion <NUM>.

The first reflective portion <NUM> has a plurality of first openings <NUM>, <NUM> and <NUM>. The second reflective portion <NUM> has a plurality of second openings <NUM> The first openings <NUM>, <NUM> and <NUM> and the second openings <NUM> may have a generally quadrangular shape. In the inventive organic light emitting display device having a mirror function, the second openings <NUM> have a different shape and a different size from the first openings <NUM>, <NUM> and <NUM> so that the reflectivity of the second reflective portion <NUM> is equal to the reflectivity of the first reflective portion <NUM>.

In the present embodiment, the light-blocking pattern <NUM> overlaps the metal line <NUM>, and thus the light-blocking pattern <NUM> may block light due to reflection from the metal line <NUM>. Since light from a lower substrate is blocked, a reflectivity of the reflective member <NUM> may be constant. Thus, a reflectivity of the second reflective portion <NUM> is adjusted by adjusting of a shape and a size of the second openings <NUM>. The reflectivity of the second reflective portion <NUM> is the same as a reflectivity of the first reflective portion <NUM>.

Referring to <FIG>, the third insulation layer <NUM> and the first electrode <NUM> are formed on the first substrate <NUM> on which the source electrode <NUM> and the drain electrode <NUM> are formed.

The third insulation layer <NUM> may be disposed on the source electrode <NUM> and the drain electrode <NUM>. The third insulation layer <NUM> may cover the source electrode <NUM> and the drain electrode <NUM> in the sub-pixel region A, and may extend in the first direction on the first substrate <NUM>. That is, the third insulation layer <NUM> may be disposed on the entire first substrate <NUM>. The third insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

The first electrode <NUM> may be disposed on the third insulation layer <NUM>. The first electrode <NUM> may be in contact with the source electrode <NUM> by removing a portion of the third insulation layer <NUM>. In this manner, the first electrode <NUM> may be electrically connected to the switching element <NUM>. The first electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc..

Referring to <FIG> and <FIG>, the pixel defining layer <NUM>, the light-blocking pattern <NUM>, the light emitting layer <NUM> and the second electrode <NUM> are formed on the first substrate <NUM> on which the first electrode <NUM> is formed.

The pixel defining layer <NUM> may be disposed on the third insulation layer <NUM> to expose a portion of the first electrode <NUM>. The pixel defining layer <NUM> may be formed of organic materials or inorganic materials. In this case, the light emitting layer <NUM> may be disposed on a portion that the first electrode <NUM> is exposed by the pixel defining layer <NUM>.

The light emitting layer <NUM> may be disposed on the exposed first electrode <NUM>. The light emitting layer <NUM> may be formed using light emitting materials capable of generating different colors of light (e.g., a red color, a blue color, and a green color). However, the light emitting layer <NUM> may stack light emitting materials capable of generating different colors of light, so as to emit white or other colored light.

The second electrode <NUM> may be disposed on the pixel defining layer <NUM> and the light emitting layer <NUM>. The second electrode <NUM> may cover the pixel defining layer <NUM> and the light emitting layer <NUM> in the light-emitting region A and the reflection region B, and may extend in the first direction on the first substrate <NUM>. That is, the second electrode <NUM> may be electrically connected to the first through third pixels. The second electrode <NUM> may be formed of a metal, an alloy, metal nitride, conductive metal oxide, a transparent conductive material, etc. These may be used alone or in any combination thereof.

The first reflective portion <NUM> has a plurality of first openings <NUM>, <NUM> and <NUM>. The second reflective portion <NUM> may have a plurality of second openings <NUM>. The first openings <NUM>, <NUM> and <NUM> and the second openings <NUM> may have a generally quadrangular shape.

In the inventive organic light emitting display device having a mirror function, the second openings <NUM> have a different shape and a different size from the first openings <NUM>, <NUM> and <NUM> so that the reflectivity of the second reflective portion <NUM> is equal to the reflectivity of the first reflective portion <NUM>.

<FIG> is a cross-sectional view taken along the line III-III' and the line IV-IV' of <FIG>.

The organic light emitting display device according to the present embodiment is substantially the same as the organic light emitting display device of <FIG> except for a pixel defining layer <NUM>, and thus same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG>, an organic light emitting display device according to an embodiment may include a light-blocking pattern <NUM> integrally formed with pixel defining layer <NUM>.

The pixel defining layer <NUM> may include an opaque material. For example, the pixel defining layer <NUM> may include a black organic material. The pixel defining layer <NUM> may include a carbon or a cobalt.

The light-blocking pattern <NUM> may be formed from the same material as pixel defining layer <NUM>, which may include an opaque material. For example, the light-blocking pattern <NUM> may include a black organic material. The light-blocking pattern <NUM> may include a carbon or a cobalt. Therefore, the light-blocking pattern <NUM> may block light due to reflection by metal wirings.

<FIG> is a plan view illustrating an organic light emitting display device according to an embodiment. <FIG>, <FIG> and <FIG> are cross-sectional views taken along the line V-V' and the line VI-VI' of <FIG>.

The organic light emitting display device according to the present embodiment is substantially the same as the organic light emitting display device of <FIG> and <FIG>, except for a first reflective member <NUM> and a second reflective member <NUM>.

Thus, same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG>, <FIG>, <FIG> and <FIG>, an organic light emitting display device according to a non-inventive embodiment may include a first reflective member <NUM> and a second reflective member <NUM>.

A reflective member device according to a non-inventive embodiment includes a first reflective member <NUM> disposed in the reflection region B, and a second reflective member <NUM> disposed in the light-emitting region A and the reflection region B.

A reflectivity of the first reflective member <NUM> may be different from a reflectivity of the second reflective member <NUM>. A thickness of the second reflective member <NUM> may be thinner than a thickness of the first reflective member <NUM>. A portion of light may penetrate through the second reflective member <NUM> and a portion of light may be reflected by the second reflective member <NUM>. When the reflection member includes only the first reflective member <NUM>, scattered reflection may occur at an edge of the first reflective member <NUM>. However, an organic light emitting display device according to a non-inventive embodiment includes the second reflective member <NUM> disposed in the light-emitting region A and the reflection region B. Thus, scattered reflection from edges of the first reflection member may be decreased.

In a non-inventive embodiment of <FIG>, the first reflective member <NUM> may be disposed on a first (e.g., lower) surface of the second substrate <NUM>, and the second reflective member <NUM> may be disposed on a second (e.g., upper) surface opposing the first surface of the second substrate <NUM>. In other words, the first reflective member <NUM> may be disposed under the second substrate <NUM>, and the second reflective member <NUM> may be disposed above the second substrate <NUM>. A fourth insulation layer <NUM> may be disposed on the second reflective member <NUM>.

In a non-inventive embodiment of <FIG>, both the first reflective member <NUM> and the second reflective member <NUM> may be disposed on the first (e.g., lower) surface of the second substrate <NUM>. For example, the first reflective member <NUM> may be disposed under the second substrate <NUM>, and the second reflective member <NUM> may be disposed between the second substrate <NUM> and the first reflective member <NUM>.

In a non-inventive embodiment of <FIG>, both the first reflective member <NUM> and the second reflective member <NUM> may be disposed on the first (e.g., lower) surface of the second substrate <NUM>. For example, the second reflective member <NUM> may be disposed under the second substrate <NUM>, and the first reflective member <NUM> may be disposed between the second substrate <NUM> and the second reflective member <NUM>.

Referring to <FIG>, the pixel defining layer <NUM>, the light emitting layer <NUM> and the second electrode <NUM> are formed on the first substrate <NUM> on which the first electrode <NUM> is formed.

The method of manufacturing an organic light emitting display device is substantially the same as the method of manufacturing an organic light emitting display device of <FIG>, and thus same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG>, the first reflective member <NUM> is formed on a first surface of the second substrate <NUM>.

The second substrate <NUM> and the first substrate <NUM> may include substantially the same materials. For example, the second substrate <NUM> may be formed of quartz, synthetic quartz, calcium fluoride, fluoride-doped quartz, soda lime glass, non-alkali glass etc..

The first reflective member <NUM> may include a first reflective portion <NUM> disposed in the display area DA, and a second reflective portion <NUM> disposed in the peripheral area PA. The first reflective portion <NUM> may be integrally formed with the second reflective portion <NUM>.

Referring to <FIG>, the second reflective member <NUM> is formed on a second (upper) surface opposing the first (lower) surface of the second substrate <NUM>. The fourth insulation layer <NUM> is formed on the second reflective member <NUM>.

The second reflective member <NUM> is formed directly on the second surface opposing the first surface of the second substrate <NUM>. The second reflective member <NUM> is disposed in the light-emitting region A and the reflection region B. However, the present inventive concept is not limited thereto, and an insulation layer may instead be disposed between the second substrate <NUM> and the second reflective member <NUM>, for example.

<FIG> is a plan view illustrating an organic light emitting display device according to an embodiment. <FIG> is a cross-sectional view taken along the line VII-VII' and the line VIII-VIII' of <FIG>.

The organic light emitting display device is substantially the same as the organic light emitting display device of <FIG> and <FIG>, except for a thin film encapsulation layer <NUM> and a fourth insulation layer <NUM>. Thus, same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG> and <FIG>, an organic light emitting display may include the thin film encapsulation layer <NUM> formed on a second electrode <NUM>, and the fourth insulation layer <NUM> formed on a reflective member <NUM>.

The thin film encapsulation layer <NUM> may include at least one inorganic layer and at least one organic layer. For example, the thin film encapsulation layer <NUM> may be formed by stacking (e.g., sequentially stacking) a first inorganic layer, an organic layer, and a second inorganic layer.

For example, the organic layer may be formed of a polymer, and may itself be a single layer or multiple layers (e.g., stacked layers) that is formed of, for example, one of polyethylene terephthalate, a polyimide, a polycarbonate, an epoxy, a polyethylene and a polyacrylate. The organic layer may also be formed of a polyacrylate; for example, the organic layer may include a polymerized monomer composition including a diacrylate monomer or a triacrylate monomer. The monomer composition may further include a monoacrylate monomer. The monomer composition may further include a suitable photoinitiator such as thermoplastic polyolefin (TPO), but is not limited thereto.

The first inorganic layer and the second inorganic layer may be single layers or stacked layers including a metal oxide or a metal nitride. For example, the first inorganic layer and the second inorganic layer may include one of silicon nitride (e.g., SiNx), aluminum oxide (e.g., Al2O3), silicon oxide (e.g., SiO2), and titanium oxide (e.g., TiO2). In this case, the second inorganic layer may be formed to or configured to prevent or reduce moisture from permeating into the light-emitting structure.

Other configurations may be contemplated. For example, the thin film encapsulation layer <NUM> may be formed by stacking (e.g., sequentially stacking) a first inorganic layer, a first organic layer, a second inorganic layer, a second organic layer and a third inorganic layer.

The reflective member <NUM> is formed on the thin film encapsulation layer <NUM>.

The first reflective portion <NUM> has a plurality of first openings <NUM>, <NUM> and <NUM>. The second reflective portion <NUM> has a plurality of second openings <NUM>. The first openings <NUM>, <NUM> and <NUM> and the second openings <NUM> may, for example, generally have a quadrangular shape. In the inventive organic light emitting display device having a mirror function, the second openings <NUM> have a different shape and a different size from the first openings <NUM>, <NUM> and <NUM> so that the reflectivity of the second reflective portion <NUM> is equal to the reflectivity of the first reflective portion <NUM>.

A fourth insulation layer <NUM> may be disposed on the reflective member <NUM>. The fourth insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

<FIG> is a cross-sectional view taken along the line VII-VII' and the line VIII-VIII' of <FIG>.

The organic light emitting display device according to a non-inventive embodiment is substantially the same as the organic light emitting display of <FIG> except for a first reflective member <NUM> and a second reflective member <NUM>, and thus same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG>, a reflective member may include a first reflective member <NUM> disposed in the reflection region B, and a second reflective member <NUM> disposed in the light-emitting region A and the reflection region B.

The first reflective member <NUM> is formed on the thin film encapsulation layer <NUM>. The second reflective member <NUM> is disposed on the film encapsulation layer <NUM> over the first reflective member <NUM>.

A reflectivity of the first reflective member <NUM> may be different from a reflectivity of the second reflective member <NUM>. A thickness of the second reflective member <NUM> may be thinner than a thickness of the first reflective member <NUM>. A portion of light may penetrate through the second reflective member <NUM> and a portion of light may be reflected by the second reflective member <NUM>. When the reflection member includes only the first reflective member <NUM>, scattered reflection may occur at an edge of the first reflective member <NUM>. However, an organic light emitting display device according to an exemplary embodiment of the inventive concept includes the second reflective member <NUM> disposed in the light-emitting region A and the reflection region B. Thus, scattered reflection occurring at an edge of the first reflection member may be decreased.

The organic light emitting display device according to a non-inventive embodiment is substantially the same as the organic light emitting display device of <FIG> except for a first reflective member <NUM> and a second reflective member <NUM>, and thus same reference numerals are used for same elements and repetitive explanation will be omitted.

The second reflective member <NUM> is formed on the thin film encapsulation layer <NUM>. The first reflective member <NUM> is disposed on the second reflective member <NUM>.

A reflectivity of the first reflective member <NUM> may be different from a reflectivity of the second reflective member <NUM>. A thickness of the second reflective member <NUM> may be thinner than a thickness of the first reflective member <NUM>. A portion of light may penetrate through the second reflective member <NUM> and a portion of light may be reflected by the second reflective member <NUM>. When the reflection member includes only the first reflective member <NUM>, scattered reflection may occur at an edge of the first reflective member <NUM>. However, an organic light emitting display device includes the second reflective member <NUM> disposed in the light-emitting region A and the reflection region B. Thus, scattered reflection occurring at an edge of the first reflection member may be decreased.

The method of manufacturing an organic light emitting display is substantially the same as the method of manufacturing an organic light emitting display device of <FIG>, and thus same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG>, the thin film encapsulation layer <NUM> is formed on the first substrate <NUM> on which the second electrode <NUM> is formed.

The thin film encapsulation layer <NUM> may be formed by stacking (e.g., sequentially stacking) a first inorganic layer, an organic layer, and a second inorganic layer.

For example, the organic layer may be formed of a polymer, and may also be a single layer or multiple layers (e.g., stacked layers) that is formed of, e.g., one of polyethylene terephthalate, a polyimide, a polycarbonate, an epoxy, a polyethylene and a polyacrylate. The organic layer may also be formed of a polyacrylate; for example, the organic layer may include a polymerized monomer composition including a diacrylate monomer or a triacrylate monomer. The monomer composition may further include a monoacrylate monomer. The monomer composition may further include a suitable photoinitiator such as thermoplastic polyolefin (TPO), but is not limited thereto.

Referring to <FIG>, the reflective member <NUM> is formed on the first substrate <NUM> on which the thin film encapsulation layer <NUM> is formed.

Referring to <FIG>, the fourth insulation layer <NUM> is formed on the first substrate <NUM> on which the reflective member <NUM> is formed.

<FIG> is a plan view illustrating an organic light emitting display. <FIG> is a cross-sectional view taken along the line IX-IX' and the line X-X' of <FIG>.

The organic light emitting display is substantially the same as the organic light emitting display device of <FIG> and <FIG> except for a light-blocking pattern <NUM>, a thin film encapsulation layer <NUM> and a fourth insulation layer <NUM>, and thus same reference numerals are used for same elements and repetitive explanation will not be omitted.

Referring to <FIG> and <FIG>, an organic light emitting display may include the light-blocking pattern <NUM>, the thin film encapsulation layer <NUM> formed on a second electrode <NUM> and the light-blocking pattern <NUM>, and the fourth insulation layer <NUM> formed on a reflective member <NUM>.

The light-blocking pattern <NUM> may include an opaque material. For example, the light-blocking pattern <NUM> may include a black organic material. The light-blocking pattern <NUM> may include a carbon or a cobalt. Therefore, the light-blocking pattern <NUM> may block light due to reflection by metal wirings such as the underlying metal line <NUM>.

For example, the organic layer may be formed of a polymer, and may also be a single layer or multiple layers (e.g., stacked layers) that is formed of, for example, one of polyethylene terephthalate, a polyimide, a polycarbonate, an epoxy, a polyethylene and a polyacrylate. The organic layer may also be formed of a polyacrylate; for example, the organic layer may include a polymerized monomer composition including a diacrylate monomer or a triacrylate monomer. The monomer composition may further include a monoacrylate monomer. The monomer composition may further include a suitable photoinitiator such as thermoplastic polyolefin (TPO), but is not limited thereto.

The first inorganic layer and the second inorganic layer may be single layers or stacked layers including a metal oxide or a metal nitride. For example, the first inorganic layer and the second inorganic layer may include one of silicon nitride (e.g., SiNx), aluminum oxide (e.g., Al2O3), silicon oxide (e.g., SiO2), and titanium oxide (e.g., TiO2). In this case, the second inorganic layer may be formed to or configured to prevent or reduce permeation of moisture into the light-emitting structure.

However, the thin film encapsulation layer <NUM> may instead be formed by stacking (e.g., sequentially stacking) a first inorganic layer, a first organic layer, a second inorganic layer, a second organic layer and a third inorganic layer.

The reflective member <NUM> is formed on the thin film encapsulation layer <NUM>. A fourth insulation layer <NUM> may be disposed on the reflective member <NUM>. The fourth insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

Referring to <FIG>, the pixel defining layer <NUM>, the light-blocking pattern <NUM>, the light emitting layer <NUM> and the second electrode <NUM> are formed on the first substrate <NUM> on which the first electrode <NUM> is formed.

The method of manufacturing an organic light emitting display is substantially the same as the method of manufacturing an organic light emitting display device of <FIG>, and thus same reference numerals are used for same elements and repetitive explanation will not be omitted.

The fourth insulation layer <NUM> may be disposed on the reflective member <NUM>. The fourth insulation layer <NUM> may be formed of a silicon compound, a metal oxide, etc..

<FIG> is a plan view illustrating an organic light emitting display device according to an exemplary embodiment of the inventive concept. <FIG> is a cross-sectional view taken along the line XI-XI' and the line XII-XII' of <FIG>.

The organic light emitting display device is substantially the same as the organic light emitting display device of <FIG> and <FIG> except for second openings <NUM> and a sealing member <NUM>, and thus same reference numerals are used for same elements and repetitive explanation will be omitted.

Referring to <FIG> and <FIG>, an organic light emitting display device may include a sealing member <NUM> coupling a first substrate <NUM> and a second substrate <NUM> together.

The sealing member <NUM> is disposed in the peripheral area PA between the first substrate <NUM> and the second substrate <NUM>. The sealing member <NUM> may encapsulate the display area DA.

Claim 1:
An organic light emitting display device (<NUM>) having a mirror function, the device comprising:
a substrate (<NUM>) comprising a display area (DA) and a peripheral area (PA); and
a first reflective member (<NUM>) positioned in both the display area (DA) and the peripheral area (PA), the first reflective member (<NUM>) comprising:
a plurality of first openings (<NUM>, <NUM>, <NUM>) formed in a light-emitting region (A) of the display area (DA); and
a plurality of second openings (<NUM>) formed in the peripheral area (PA),
wherein the peripheral area (PA) is arranged outside the display area (DA), and
wherein the first reflective member (<NUM>) comprises:
a first reflective portion (<NUM>) disposed in the display area (DA);
a second reflective portion (<NUM>) disposed in the peripheral area (PA) and integrally formed with the first reflective portion (<NUM>); and
the shape, size and number of the second openings (<NUM>) is configured such that the reflectivity of the second reflective portion (<NUM>) is equal to the reflectivity of the first reflective portion,
characterized in that the second openings have a different shape or size from the first openings.