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Display

A display and light-emitting element technology, applied in the display field, can solve problems such as uneven lines, uneven spots, and disturbed deposition surfaces

Inactive Publication Date: 2009-01-07
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reverse imprinting phenomenon is likely to occur when the pressure applied to the donor substrate 840 is transferred by laser heating
If reverse imprinting occurs, the deposition surface of the hole injection layer and the hole transport layer on the acceptor substrate 811 is disturbed, thereby generating a current leakage CL through defects caused by the reverse imprinting as shown in FIG.
This current leakage CL causes problems of uneven lines and uneven spots when the display emits light

Method used

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no. 1 example

[0044] figure 1 A display structure according to a first embodiment of the present invention is shown. The display is used as an ultra-thin organic light-emitting color display and the like. For this display, for example, a display region 110 in which a plurality of organic light emitting elements 10R, 10G, and 10B described later are arranged in a matrix is ​​formed on a receptor substrate 11 made of glass. Furthermore, around this display area 110, a signal line driver circuit 120 and a scan line driver circuit 130 are formed as drivers for video display.

[0045] The pixel driving circuit 140 is formed in the display area 110 . figure 2One example of a pixel drive circuit 140 is shown. This pixel driving circuit 140 is formed under a first electrode described later, and is composed of a driving transistor Tr1, a writing transistor Tr2, a capacitor (holding capacitor) Cs between these transistors, and a first power supply line (Vcc) and An active driving circuit of the ...

no. 2 example

[0088] 18A and 18B show the shape of the insulating layer 14 in the display according to the second embodiment of the present invention. In this display, only the light emitting layer 15C of the organic light emitting elements 10R and 10G is the transfer light emitting layer 15C formed by transfer, while the organic light emitting element 10B is formed by a method other than transfer (for example, vapor deposition). Light emitting layer 15C. Furthermore, if the insulating layer 14 is equally distributed to each of the red, green, and blue light-emitting element columns 110R, 110G, and 110B, the contact area between the insulating layer 14 and the donor substrate 40 in the blue light-emitting element column 10B (i.e. , the area of ​​the top surface of the relief 14A) is the largest. Due to this feature, its own reverse printing can be suppressed in the display. Therefore, occurrence of line unevenness and spot unevenness can be avoided, thereby improving display quality. In ...

example 1

[0094] Similar to the first embodiment, a display including the red and blue organic light emitting elements 10R and 10B was manufactured. During this manufacturing process, the width of the light emitting region 13A and the distances CC and DD were measured. As a result, the width of the light emitting region 13A was 70 μm, and the distances CC and DD were 78 μm and 122 μm, respectively. For each of the organic light emitting elements 10R and 10B, a light emitting layer 15C is formed by transfer. Changing the length of the longitudinal axis of the beam spot of the laser light to a different value in the range of 70 to 130 μm results in changing the width W of the light emitting layer 15C in the row direction to a different value in the range of 70 to 130 μm. The minor axis of the beam spot of the laser was fixed at 20 μm, and the laser was moved to scan in a direction perpendicular to the longitudinal direction of the laser beam spot. Set the wavelength and energy density o...

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Abstract

Disclosed herein is a display including an acceptor substrate having thereon a red light-emitting element column, a green light-emitting element column, and a blue light-emitting element column that are arranged along a row direction and are each obtained by arranging rectangular organic light-emitting elements for generating light of one of red, green, and blue along a longitudinal direction of the organic light-emitting elements. The invention is used to testrain the problems of luminance nonuniformity, uneven color, decreased luminous efficiency and the like, and improve the display quality.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP 2007-064787 filed in the Japan Patent Office on Mar. 14, 2007, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a display using an organic light-emitting element having a transferred light-emitting layer obtained by a thermal transfer method. Background technique [0004] As one method of manufacturing an organic light emitting element, a pattern manufacturing method using thermal transfer printing has been disclosed. In the thermal transfer method, a donor assembly formed by forming a transfer layer containing a luminescent material on a support is formed. Subsequently, the donor assembly is disposed opposite to an acceptor substrate for forming an organic light emitting element, and the transfer layer is transferred to the acceptor substrate by irradiating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/14H05B33/12H05B33/10H10K99/00
CPCH01L27/3283H01L27/3246H01L27/3211H01L51/0013H01L27/3206H01L51/56H10K59/35H10K59/173H10K59/122H10K71/18H10K71/40H10K59/30H10K10/488H10K71/00
Inventor 松尾圭介佐藤千代子花轮幸治芝崎孝宜山本哲郎三浦究
Owner SONY CORP
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