US 6,967,114 B2Granted

Large EL panel and manufacturing method therefor

AssigneeSeiko Epson Corporation

InventorsTatsuya Shimoda, Takao Nishikawa

Life of this patent

Estimating the term…

Loading patent…

Abstract

A manufacturing method is disclosed for a large EL panel in which a plurality of EL display panels are used. Each of said plurality of EL display panels are constructed of an EL display device and a sub-transparent substrate. The EL display device includes a base layer over which a luminescent material is applied, an electrode layer which is laminated on one side of said base layer, and a TFT layer including a circuit section. The circuit section of a TFT layer is disposed behind an adjacent EL display device. Thus, the EL display devices appear to be unified, forming a large EL display panel. In addition, in the case of in which a plurality of EL display devices are arranged in a matrix pattern, pitch between the pixels provided in the pixel section of the TFT array is maintained constant.

Claims12

Dependent claims

A method of manufacturing a large EL panel which includes a plurality of EL display panels, each of the plurality of EL display panels being formed of an EL display device and a sub-transparent substrate that supports the EL display device in parallel, the EL display device including:

a base layer over which a luminescent material is applied;
an electrode layer which is laminated on one side of the base layer;
and a TFT layer including a circuit section in which light emission of the luminescent material is controlled by applying a predetermined voltage between the electrode layer and the TFT layer and a pixel section which is superimposed over another side of the base layer opposite the one side and which is provided with a plurality of pixels which divide the base layer into sections so that light emission of the luminescent material in each section is individually controlled by generating a potential difference between the electrode layer and the TFT layer at the corresponding section, the method of manufacturing comprising:
removing the EL display devices from the sub transparent substrates;
arranging the obtained EL display devices on a main transparent substrate, which is broader than the sub-transparent substrate, in a matrix pattern and in a manner such that light emitting areas of the adjacent EL display devices are in proximity to each other;
and
disposing and fixing the circuit section of the TFT layer, which is disposed at a region outside the light emitting area, behind an adjacent EL display device.

4 more elements

A manufacturing method of an EL panel comprising:

providing a substrate;
disposing a first EL display element including a TFT layer above the substrate, the TFT layer including a plurality of first pixel sections that are arranged in the first EL display element and a first circuit section, each of the first pixel sections being capable of emitting lights, and the first circuit section controlling the emissions of the first pixel sections;
and
disposing a second EL display element including a TFT layer above the substrate so as to be arranged adjacent to the first EL display element, the TFT layer including a plurality of second pixel sections are arranged in the second EL display element, each of the second pixel sections being capable of emitting lights, the first circuit section and the second EL display element overlapping with each other such that a pitch between adjacent ones of the first pixel sections and the second pixel sections being approximately constant with a pitch between adjacent ones of the first pixel sections.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 10/617,746Filed 14 Jul 2003 · division
Priority: JP 11-28084330 Sep 1999
Published: US 2004/0014252 A122 Jan 2004
Granted: 22 Nov 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G09F 9/313
In which the desired character or characters are formed by combining individual elements: being gas discharge devices
H10K 59/18
OLED displays: tiled displays
H10K 59/12
OLED displays: active-matrix OLED [AMOLED] displays
G09F
Displaying

Family

PCT/JP00/06622Parent of this division · filed 26 Sep 2000
US 2004/0014252 A1Pre-grant publication · published 22 Jan 2004
Application09/856,852Parent of this division
US 6,642,542 B1Parent of this division
US 6,967,114 B2This patent

From the US filing history. Foreign family members aren’t listed.