CN1602123A - Top-lighting organic electroluminescent display device and its mfg method - Google Patents
Top-lighting organic electroluminescent display device and its mfg method Download PDFInfo
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Abstract
First, the method provides white light organic light emitting diode (OLED) arrays base plate in top shine type. Next, color filtering base plate is provided, and water absorption material layer of covering part of color filtering base plate is formed on the color filtering base plate. Then, frame glue is formed between white light OLED arrays base plate and color filtering base plate in order to seal white light OLED arrays base plate and color filtering base plate face to face. Water absorption material layer is sealed between white light OLED arrays base plate and color filtering base plate. The said water absorption material layer will not block off zone of luminosity to reduce luminous area.
Description
Technical Field
The present invention relates to a display and a method of manufacturing the same, and more particularly, to a top emission type organic electroluminescent display and a method of manufacturing the same.
Background
The rapid progress of the multimedia society is mostly due to the dramatic progress of semiconductor devices and display devices. In the display, a Cathode Ray Tube (CRT) has been exclusively used in the recent display market because of its excellent display quality and economical efficiency. However, the cathode ray tube still has many problems in terms of space utilization and energy consumption, and the need for light weight, thinness, shortness, smallness and low power consumption cannot effectively provide a solution. Therefore, Flat panel displays (Flat panel displays) having excellent characteristics such as high image quality, space efficiency, low power consumption, and no radiation have become the mainstream of the market.
The flat Panel Display includes a Liquid Crystal Display (LCD), an Organic electroluminescent Display (OELD), a Plasma Display Panel (PDP), and the like. Among them, the OELD display is a dot matrix display having a self-luminous (Emissive) element, which has characteristics of High brightness, High efficiency, light weight, High Contrast Ratio (High efficient Contrast Ratio) and dc low voltage driving, so that the OELD display has lower power consumption than CRT, PDP and LCD, and is a new flat panel display of the next generation since the degree of freedom of the light emission color from three primary colors of red, green and blue (R, G, B) to white is High.
However, since the organic material is used as the light emitting element of the organic electroluminescent display, and most of the organic material has water absorption property, a material capable of absorbing moisture must be disposed in the organic electroluminescent display and encapsulated between the substrate and the encapsulation cover to prevent the organic material from absorbing moistureand changing its material properties, which may affect its light emitting mechanism, even cause failure of the light emitting element.
Currently, organic electroluminescent displays are classified into Bottom Emission type (Bottom Emission) and Top Emission type (Top Emission) according to the direction of light emitted from the light source. Fig. 1 is a cross-sectional view of a conventional Organic electroluminescent display, and referring to fig. 1, the active Organic Light Emitting Diode array substrate 100 includes a glass substrate 108 and an Organic Light Emitting Diode (OLED) array 102, a water absorbing material layer 104 is disposed on a transparent encapsulation cover 106, the water absorbing material layer 104 is encapsulated between the transparent encapsulation cover 106 and the active Organic Light Emitting Diode array substrate 100, and the water absorbing material layer 104 is usually a sheet-shaped substance. Assuming that the display is a bottom emission type organic electroluminescent display, the light emitted from the organic light emitting diode array 102 is emitted out of the glass substrate 108 from the direction indicated by the reference numeral 112, so the arrangement of the water absorbing material layer 104 on the transparent cover 106 does not affect the light emitting region. However, if the display is a top-emission organic electroluminescent display, the light emitted from the organic light emitting diode array 102 is emitted out of the transparent cover 106 from the direction indicated by the reference numeral 110, and the water absorbing material layer 104 disposed on the transparent cover 106 may block the light emitting region, thereby reducing the light emitting area of the display.
Accordingly, there are still many drawbacks in the conventional organic electroluminescent display and the manufacturing method thereof, and further improvement is needed. In order to solve the drawbacks of the conventional organic electroluminescent display and the manufacturing method thereof, related manufacturers have tried to solve the problems without diligent attention, but it has not been known that suitable designs have been developed and completed for a long time, which is obviously a problem to be solved by related manufacturers.
In view of the above-mentioned drawbacks of the conventional organic electroluminescent display and the manufacturing method thereof, the present inventors have made active research and innovation based on practical experience and professional knowledge that is abundant over many years in designing and manufacturing such products, and have created a new top emission type organic electroluminescent display and the manufacturing method thereof, which can improve the conventional organic electroluminescent display and the manufacturing method thereof to make it more practical. After continuous research and design and repeated trial production and improvement, the invention with practical value is finally created.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned drawbacks of the prior art organic electroluminescent display and the manufacturing method thereof, and provides a new top emission type organic electroluminescent display and the manufacturing method thereof, which solves the technical problem of preventing the water-absorbing material layer disposed therein from blocking the light-emitting region and reducing the light-emitting area, thereby providing a practical and industrially useful organic electroluminescent display
Another object of the present invention is to provide a top emission type organic electroluminescent display and a method for manufacturing the same, which solves the technical problem of not blocking the water absorbing material layer in the top emission type white organic electroluminescent display to the light emitting region of the display.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. According to the present invention, there is provided a top emission type organic electroluminescent display, comprising: a white organic light emitting diode array substrate, wherein the light emitting type of the white organic light emitting diode array substrate is a top light emitting type; a color filter substrate disposed above the white light OLED array substrate; a water-absorbing material layer disposed on a portion of the color filter substrate; and the frame glue is arranged between the white organic light emitting diode array substrate and the color filter substrate so as to seal the white organic light emitting diode array substrate and the color filter substrate, and the water absorbing material layer is sealed between the white organic light emitting diode array substrate and the color filter substrate.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
In the top emission type organic electroluminescent display, the water absorbing material layer is disposed on the color filter substrate in a mesh pattern.
In an embodiment of the present invention, the color filter substrate includes a black matrix and a plurality of color resist layers, and the water absorbing material layer is disposed on the black matrix.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means. The invention provides a manufacturing method of a top-emitting organic electroluminescent display, which comprises the following steps: providing a white organic light emitting diode array substrate, wherein the light emitting type of the white organic light emitting diode array substrate is a top light emitting type; providing a color filter substrate; forming a water-absorbing material layer on the color filter substrate to cover a part of the color filter substrate; and forming a frame adhesive between the white light organic light emitting diode array substrate and the color filter substrate to seal the white light organic light emitting diode array substrate and the color filter substrate, and sealing the water absorbing material layer between the white light organic light emitting diode array substrate and the color filter substrate.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
In the above method for manufacturing a top emission type organic electroluminescent display, the step of forming the water absorbing material layer on the color filter substrate includes using a transfer printing method.
In the above method for fabricating the top emission type organic electroluminescent display, the method for forming the water absorbing material layer on the color filter substrate includes using a sputtering process with a shadow mask (shadow mask).
In the above method, the color filter substrate includes a black matrix and a plurality of color resist layers, and the water-absorbing material layer is formed on the black matrix.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the present invention, there is provided a top emission type organic electroluminescent display, comprising: an active organic light emitting diode array substrate, wherein the light emitting type of the active organic light emitting diode array substrate is a top light emitting type; a transparent packaging cover covering the active organic light emitting diode array substrate and sealing the active organic light emitting diode array substrate; and a water-absorbing material layer disposed on part of the transparent encapsulation cover, wherein the water-absorbing material layer is encapsulated between the active organic light emitting diode array substrate and the transparent encapsulation cover.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
In the top emission organic electroluminescent display, the water-absorbing material layer is disposed on the transparent cover in a mesh pattern.
In the above-mentioned top-emission organic electroluminescent display, the active matrix organic light emitting diode array substrate includes a plurality of scan lines and a plurality of data lines, and the water-absorbing material layer is disposed corresponding to the scan lines and the data lines.
Compared with the prior art, the invention has obvious advantages and beneficial effects. As can be seen from the above technical solutions, in order to achieve the above object, the main technical contents of the present invention are as follows:
the invention provides a top-emitting organic electroluminescent display, which comprises a white organic light emitting diode array substrate, a color filter substrate, a water absorbing material layer and frame glue. The light-emitting type of the white organic light-emitting diode array substrate is a top light-emitting type, the color filter substrate is arranged above the white organic light-emitting diode array substrate, the water-absorbing material layer is arranged on part of the color filter substrate, andthe frame glue is arranged between the white organic light-emitting diode array substrate and the color filter substrate, so that the white organic light-emitting diode array substrate and the color filter substrate are sealed, and the water-absorbing material layer is sealed between the white organic light-emitting diode array substrate and the color filter substrate.
The invention also provides a manufacturing method of the top-emitting organic electroluminescent display, which comprises the step of providing the white organic light-emitting diode array substrate, wherein the light-emitting type of the white organic light-emitting diode array substrate is the top-emitting type. And providing a color filter substrate, and forming a water absorbing material layer on the color filter substrate to cover part of the color filter substrate. And then, forming frame glue between the white light organic light emitting diode array substrate and the color filter substrate so as to seal the white light organic light emitting diode array substrate and the color filter substrate, and sealing the water absorbing material layer between the white light organic light emitting diode array substrate and the color filter substrate.
The invention further provides a top emission type organic electroluminescent display, which comprises an active organic light emitting diode array substrate, a transparent encapsulation cover and a water absorption material layer. The light emitting type of the active organic light emitting diode array substrate is a top light emitting type. The transparent packaging cover covers the active organic light emitting diode array substrate and seals the active organic light emitting diode array substrate. And the water absorption material layer is arranged on part of the transparent packaging cover, and the water absorption material layer is sealed between the active organic light emitting diode array substrate and the transparent packagingcover.
As can be seen from the above, the water absorbing material layer in the top-emission organic electroluminescent display of the present invention has a proper configuration position compared with the conventional products, so that the water absorbing material layer does not block the light-emitting area of the display, and the light-emitting area of the display is not adversely affected. It can effectively utilize the space between panels to arrange enough water-absorbing material layer, and can protect the light-emitting component in the display from moisture.
In summary, the top emission organic electroluminescent display and the method for fabricating the same according to the present invention have the special structure, wherein the water-absorbing material layer does not block the light-emitting region, thereby avoiding the reduction of the light-emitting area, and thus the top emission organic electroluminescent display is more practical and has industrial utility value; the water absorbing material layer in the designed white organic electroluminescent display of the top light-emitting type can not block the light-emitting area of the display. The organic electroluminescent display has the advantages and practical values, similar structural design and method are not published or used in the similar products and manufacturing methods, so that the organic electroluminescent display is innovative, the product structure, the manufacturing method or the function are greatly improved, the technology is greatly improved, the good and practical effect is produced, and the organic electroluminescent display has a plurality of enhanced effects compared with the conventional organic electroluminescent display and the manufacturing method thereof, so that the organic electroluminescent display is more practical, has industrial wide utilization value, and is a novel, improved and practical new design.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a cross-sectional view of a conventional organic electroluminescent display.
Fig. 2 is a cross-sectional view of a top emission type organic electroluminescent display according to a preferred embodiment of the present invention.
Fig. 3 is a top view of the color filter substrate of the present invention.
Fig. 4 is a cross-sectional view of a-a' in fig. 3.
FIG. 5 is a sectional view of a method for disposing a water-absorbent material layer according to a preferred embodiment of the present invention.
FIG. 6 is a sectional view of a method of disposing a water-absorbent material layer according to another preferred embodiment of the present invention.
FIG. 7 is a sectional view of another preferred embodiment of the present invention, illustrating a method for disposing a water-absorbent material layer.
Fig. 8 is a cross-sectional view of a top emission type organic electroluminescent display according to another preferred embodiment of the present invention.
Fig. 9 is a top view of an active matrix organic light emitting diode array substrate according to the present invention.
100: active organic light emitting diode array substrate 102, 202: organic light emitting diode array
104. 204, 804: water absorbing material layer 106: transparent packaging cover
108. 208, 212: glass substrate 110, 112, 214, 500: direction of rotation
200: top white organic light emitting diode array substrate 206: color filter substrate
210: the frame glue 300: r, G, B color resist layer
302: black matrix 904: anode
600: shadow mask 602: 600 at the non-shielded position
604: shield 900 above 600: scanning wiring
902: data wiring 906: thin film transistor
Detailed Description
The detailed structure, manufacturing method, steps, features and effects of the organic electroluminescent display according to the present invention will be described with reference to the accompanying drawings.
Fig. 2 is a cross-sectional view of a top-emission organic electroluminescent display according to a preferred embodiment of the present invention. The top emission type organic electroluminescent display according to the preferred embodiment of the present invention includes a white organic light emitting diode array substrate 200, a color filter substrate 206, a water absorbing material layer 204 and a sealant 210. The white oled array substrate 200 includes a white oled array 202 and a glass substrate 208. The color filter substrate 206 is disposed above the white oled array substrate 200, and the water absorbing material layer 204 is disposed on a portion of the color filter substrate 206 in a mesh pattern. The material of the water absorbing material layer 206 is, for example, calcium oxide (CaO) or magnesium oxide (MgO). The sealant 210 is disposed between the white oled array substrate 200 and the color filter substrate 206, so that the white oled array substrate 200 and the color filter substrate 206 are sealed together, and the water-absorbing material layer 204 is sealed between the white oled array substrate 200 and the color filter substrate 206, thereby forming a top-emission organic electroluminescent display. The top-emission organic electroluminescent display may be a passive top-emission organic electroluminescent display or an active top-emission organic electroluminescent display.
Moreover, the color filter substrate 206 of the present embodiment further includes a glass substrate, a black matrix (BlackMatrix), and a plurality of R, G, B color photoresist layers. Referring to fig. 3 and 4, fig. 3 is a distribution diagram of R, G, B color photoresist layer and black matrix on a glass substrate, and fig. 4 is a cross-sectional view of a-a' in fig. 3. The arrangement of the color resist layers 300 on the glass substrate 212 can be divided into mosaic type, delta type, stripe type, 4-pixel configuration type, etc. according to the actual process requirements, and the embodiment is only illustrated by the delta arrangement, but the arrangement of the color resist layers 300 on the glass substrate 212 is not limited to delta arrangement. A black matrix 302 is disposed between the R, G, B color photoresist layers 300 to increase the light shielding effect when a non-selection voltage is applied, thereby improving the contrast of the device. The water absorbing material layer 204 is disposed on the black matrix 302 of the color filter substrate 206.
As mentioned above, since the black matrix 302 is originally a non-light-transmitting region, disposing the water-absorbing material layer 204 thereon can prevent the water-absorbing material layer 204 from blocking the light emitted from the white organic light emitting diode202, and further can solve the problem of adverse effect on the light-emitting region of the display due to improper disposition of the water-absorbing material layer in the conventional product.
Referring to fig. 2, a method for fabricating the top emission type organic electroluminescent display will be described in detail. First, a white oled array substrate 200 is provided, and the light emitting type of the white oled array substrate 200 is a top-emitting type, so that light is emitted through the color filter substrate 206 in a direction indicated by a reference numeral 214. In a preferred embodiment, the white oled array substrate 200 is formed by forming a white oled array 202 on a glass substrate 208, and the white oled array 202 is formed by stacking an anode layer, an organic material layer and a cathode layer in sequence. The anode layer can be made of transparent or opaque material, but since the OLED display of the present invention is a top-emitting OLED display, if the anode 400 is made of transparent conductive material, a metal layer is required to be plated under the anode layer for use as a reflective layer. The material of the organic material layer depends on the wavelength of the light to be emitted. The cathode layer is made of a transparent material so that light can penetrate through the cathode layer and be emitted from the color filter substrate 206.
In another preferred embodiment, the white oled array 202 may further include an opaque cathode layer, an organic material layer, and a transparent anode layer stacked in sequence. Therefore, the light can be emitted to the color filter substrate 206 through the transparent anode layer and then to the top. It is particularly noted that the white light organic light emitting diode array 202 can be a passive organic light emitting diode array or an active organic light emitting diode array, and if the white light organic light emitting diode array 202 is an active organic light emitting diode array, each organic light emitting diode unit further includes an active device.
Referring to fig. 2 to 4, the color filter substrate 206 is provided, and the color filter substrate 206 is formed, for example, by forming a black matrix 302 and a plurality of R, G, B color photoresist layers 300 on a glass substrate 212.
Then, the water absorbing material layer 204 is formed on the opaque region of the color filter substrate 206, for example, the opaque region is on the black matrix 302. Referring to fig. 5, the method for forming the water-absorbing material layer 204 on the black matrix 302 is, for example, a transfer method, in which a water-absorbing material, such as magnesium oxide (MgO) or calcium oxide (CaO), is coated on the circumferential surface of the rotating shaft 304 and is rotated, for example, clockwise or counterclockwise, and the color filter substrate 206 having the black matrix 302 and the plurality of R, G, B color photoresist layers 300 is translated according to the direction of reference numeral 500 or in the opposite direction, so that the water-absorbing material on the circumferential surface of the rotating shaft 304 is transferred to the black matrix 302 on the color filter substrate 206, thereby completing the configuration of the water-absorbing material layer 204.
As shown in fig. 2, a sealant 210 is formed between the white oled array substrate 200 and the color filter substrate 206 to seal the white oled array substrate 200 and the color filter substrate 206, and the water-absorbing material layer 204 is sealed between the white oled array substrate 200 and the color filter substrate 206, so as to effectively absorb water vapor existing between the two substrates, so that the light-emitting device in the display does not affect the light-emitting mechanism thereof due to water vapor absorption.
In anotherpreferred embodiment of the present invention, the method of forming the water-absorbing material layer on the black matrix further comprises using a sputtering process with a shadow mask (shadow mask). Referring to fig. 6, a shadow mask 600 is disposed above the color filter substrate 206, and a water-absorbing material is deposited on the color filter substrate 206 by sputtering through the shadow mask 600. The shadow mask 600 has a non-shadow area 602 and a shadow area 604. Referring to fig. 7, after the sputtering process, the water absorbing material layer 204 is formed on the black matrix 302 corresponding to the non-shielding region 602, and the water absorbing material layer 204 is not formed on the R, G, B color photoresist layer 300 corresponding to the shielding region 604, thereby completing the configuration of the water absorbing material layer 204.
The water absorbing material layer is configured on the black matrix on the color filter substrate, and the black matrix belongs to the non-light-transmitting area, so that the water absorbing material layer is configured on the non-light-emitting area of the top-emitting organic electroluminescent display, the space between the display panels can be effectively utilized to configure enough water absorbing material layer, and the influence of the light emitting component in the display on the efficiency due to the absorption of water vapor can be avoided.
A set of experimental data of this embodiment is further illustrated to make the description of this embodiment more clear and complete. In the fourth OELD display product, a water absorbing material having a thickness of 20 μ is used, and the water absorbing material is, for example, calcium oxide (CaO) having a density of 3.3g/cm3. The OELD display panel of the fourth embodiment has an aperture ratio of about 50% and a light emitting area of 85 × 65 cm. The water absorption material in the display panel needs to absorb 30mg of water vapor, and the reaction formula of the calcium oxide for absorbing water is
The total weight of calcium oxide is about 8.5 × 6.5 × 0.5 × 0.002 × 3.3 ═ 0.182325g
And it can absorb moisture about (0.182325/56.08) × 18 × 1000 ═ 58.52mg, which is much more than the amount of moisture required to be absorbed, 30 mg. Therefore, the calcium oxide with the thickness of 20 mu can completely absorb the moisture in the four OLED display panels.
In another preferred embodiment of the present invention, the configuration of the water absorbing material in the general top emission type active organic electroluminescent display can also be improved. Fig. 8 is a cross-sectional view of a top emission type active organic electroluminescent display according to another preferred embodiment of the present invention. The top emission type active organic electroluminescent display includes an active organic light emitting diode array substrate 100, a transparent encapsulation cover 106 and a water absorbing material layer 804. The light emitting pattern of the active matrix organic light emitting diode array substrate 100 is a top light emitting pattern, and light is emitted from a direction indicated by a reference numeral 110. The amoled array substrate 100 includes a glass substrate 108 and an amoled array 102. The transparent cover 106 covers the active matrix organic light emitting diode array substrate 100 and seals the active matrix organic light emitting diode array substrate 100. The water absorbing material layer 804 is disposed on a portion of the transparent cover 106 in a mesh pattern, and the water absorbing material layer 804 is sealed between the active matrix organic light emitting diode array substrate 100 and the transparent cover 106.
The active matrix organiclight emitting diode array substrate 100 is formed by stacking a thin film transistor array, an anode layer, an organic material layer, and a cathode layer. As shown in fig. 8 and fig. 9, the tft array includes a plurality of tfts 906, Scan lines (Scan lines) 900 and Data lines (Data lines) 902, and the anode layer 904 is disposed in the region surrounded by the Scan lines 900 and the Data lines 902. In particular, the water-absorbing material layer 804 on the transparent cover 106 is disposed according to the layout of the scan lines 900 and the data lines 902.
In the present embodiment, the water-absorbing material layer 804 is disposed on the transparent cover 106 corresponding to the scan lines 900 and the data lines 902, so that the water-absorbing material layer 804 can be prevented from blocking the light-emitting area of the display, and the space between the display panels can be effectively utilized to dispose sufficient water-absorbing material layer, thereby preventing the light-emitting components in the display from absorbing moisture and affecting the performance thereof.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A top emission type organic electroluminescent display, comprising:
a white organic light emitting diode array substrate, wherein the light emitting type of the white organic light emitting diode array substrate is a top light emitting type;
a color filter substrate disposed above the white light OLED array substrate;
a water-absorbing material layer disposed on a portion of the color filter substrate; and
and the frame glue is arranged between the white organic light emitting diode array substrate and the color filter substrate so as to seal the white organic light emitting diode array substrate and the color filter substrate, and the water absorbing material layer is sealed between the white organic light emitting diode array substrate and the color filter substrate.
2. The top-emission organic electroluminescent display according to claim 1, wherein the water-absorbing material layer is disposed on the color filter substrate in a mesh pattern.
3. The top-emission organic electroluminescent display according to claim 1, wherein the color filter substrate comprises a black matrix and a plurality of color resist layers, and the water absorbent material layer is disposed on the black matrix.
4. A method for manufacturing a top emission type organic electroluminescent display, comprising the steps of:
providing a white organic light emitting diode array substrate, wherein the light emitting type of the white organic light emitting diode array substrate is a top light emitting type;
providing a color filter substrate;
forming a water-absorbing material layer on the color filter substrate to cover a part of the color filter substrate; and
and forming a frame adhesive between the white light organic light emitting diode array substrate and the color filter substrate to seal the white light organic light emitting diode array substrate and the color filter substrate, and sealing the water absorbing material layer between the white light organic light emitting diode array substrate and the color filter substrate.
5. The method of claim 4, wherein the step of forming the water-absorbing material layer on the color filter substrate comprises transferring the water-absorbing material layer to a substrate.
6. The method of claim 4, wherein the step of forming the water-absorbing material layer on the color filter substrate comprises using a sputtering process with a shadow mask (shadow mask).
7. The method as claimed in claim 4, wherein the color filter substrate comprises a black matrix and a plurality of color resist layers, and the water-absorbing material layer is formed on the black matrix.
8. A top emission type organic electroluminescent display, comprising:
an active organic light emitting diode array substrate, wherein the light emitting type of the active organic light emitting diode array substrate is a top light emitting type;
a transparent packaging cover covering the active organic light emitting diode array substrate and sealing the active organic light emitting diode array substrate; and
and a water-absorbing material layer disposed on part of the transparent encapsulation cover, wherein the water-absorbing material layer is encapsulated between the active organic light emitting diode array substrate and the transparent encapsulation cover.
9. The top-emission organic electroluminescent display according to claim 8, wherein the water-absorbent material layer is disposed on the transparent cover in a mesh pattern.
10. The top-emission organic electroluminescent display according to claim 8, wherein the active matrix organic electroluminescent display substrate comprises a plurality of scan lines and a plurality of data lines, and the water-absorbing material layer is disposed corresponding to the scan lines and the data lines.
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| CNB031346723A CN100433352C (en) | 2003-09-25 | 2003-09-25 | Top-lighting organic electroluminescent display device and its mfg method |
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| CNB031346723A CN100433352C (en) | 2003-09-25 | 2003-09-25 | Top-lighting organic electroluminescent display device and its mfg method |
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| CN111192977A (en) * | 2020-02-17 | 2020-05-22 | 京东方科技集团股份有限公司 | Substrate, manufacturing method thereof, display panel and display device |
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| CN103258841A (en) * | 2013-04-26 | 2013-08-21 | 京东方科技集团股份有限公司 | Display panel, display device and electronic device |
| CN103531717A (en) * | 2013-10-25 | 2014-01-22 | 京东方科技集团股份有限公司 | OLED display device and manufacturing method thereof |
| US9905797B2 (en) | 2013-10-25 | 2018-02-27 | Boe Technology Group Co., Ltd. | OLED display device and fabrication method thereof |
| CN107833977A (en) * | 2017-08-23 | 2018-03-23 | 江苏集萃有机光电技术研究所有限公司 | A kind of organic light emitting display and preparation method thereof |
| CN111192977A (en) * | 2020-02-17 | 2020-05-22 | 京东方科技集团股份有限公司 | Substrate, manufacturing method thereof, display panel and display device |
| CN113097411A (en) * | 2021-03-22 | 2021-07-09 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
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