# US 10,763,322 B2 · Display device and method for manufacturing the same

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- Number: US 10,763,322 B2
- Document ID: US10763322B2
- Status: Granted
- Kind: B2
- Application number: 16/509,819
- Filed: 2019-07-12
- Published: 2019-10-31
- Granted: 2020-09-01
- Earliest claimed: 2013-12-02
- Assignees: Semiconductor Energy Laboratory Co., Ltd.
- Applicants: Semiconductor Energy Laboratory Co., Ltd.
- Inventors: Shunpei Yamazaki; Masakatsu Ohno; Hiroki Adachi; Satoru Idojiri; Koichi Takeshima
- Web page: https://patentgrep.com/patent/US10763322B2

## CPC

- H10D 86/423: {comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO}
- B23K 26/04: Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K 26/0617: {and with spots spaced along the common axis}
- B23K 26/0622: by shaping pulses
- B23K 26/0643: {comprising mirrors}
- B23K 26/0648: {comprising lenses}
- B23K 26/083: {Devices involving movement of the workpiece in at least one axial direction}
- H10D 30/6755: {Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate}
- H10D 30/6758: {characterised by the insulating substrates}
- H10D 62/80: characterised by the materials
- H10D 86/0214: {using temporary substrates}
- H10D 86/60: wherein the TFTs are in active matrices
- H10D 99/00: Subject matter not provided for in other groups of this subclass
- H10K 59/1213: {the pixel elements being TFTs}
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 71/421: {using coherent electromagnetic radiation, e.g. laser annealing}
- H10K 71/50: Forming devices by joining two substrates together, e.g. lamination techniques
- H10K 71/80: using temporary substrates
- H10K 77/111: {Flexible substrates}
- H10D 30/6734: {having gate electrodes arranged on both top and bottom sides of the channel, e.g. dual-gate TFTs}
- H10D 30/6757: {characterised by the structure of the channel, e.g. transverse or longitudinal shape or doping profile (TFTs having channel structures for preventing kink or snapback effects H10D30/6708; TFTs having lightly-doped source or drain extensions H10D30/6715)}
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- H10K 59/1201: {Manufacture or treatment}
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- H10K 2102/311: {Flexible OLED}
- H10K 2102/351: {Thickness}
- H10N 30/074: by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A first organic resin layer is formed over a first substrate; a first insulating film is formed over the first organic resin layer; a first element layer is formed over the first insulating film; a second organic resin layer is formed over a second substrate; a second insulating film is formed over the second organic resin layer; a second element layer is formed over the second insulating film; the first substrate and the second substrate are bonded; a first separation step in which adhesion between the first organic resin layer and the first substrate is reduced; the first organic resin layer and a first flexible substrate are bonded with a first bonding layer; a second separation step in which adhesion between the second organic resin layer and the second substrate is reduced; and the second organic resin layer and a second flexible substrate are bonded with a second bonding layer.

## Claims

### Claim 1

A device for irradiating an object comprising a planar substrate, an organic resin layer over a top surface of the planar substrate, and an element layer over the organic resin layer with a linear beam, the device comprising:
a laser device configured to emit a laser light;
an optical system configured to extend the laser light;
a mirror configured to reflect the laser light; and
a lens configured to condense the laser light reflected by the mirror into the linear beam having an energy density with which the organic resin layer is weakened or adhesion between the organic resin layer and the planar substrate is reduced, wherein the linear beam is configured to enter the organic resin layer after passing through a bottom surface and the top surface of the planar substrate.

### Claim 2 (depends on 1)

The device according to claim 1, wherein the laser device is configured to emit a wavelength of 308 nm or longer.

### Claim 3 (depends on 1)

The device according to claim 1, wherein the organic resin layer comprises any one of an epoxy resin, an acrylic resin, a polyimide resin, a polyamide resin, and a polyamide-imide resin.

### Claim 4 (depends on 1)

The device according to claim 1, wherein the planar substrate is a glass substrate.

### Claim 5 (depends on 1)

The device according to claim 1, wherein the linear beam is configured to enter the organic resin layer after passing through the bottom surface and the top surface in this order.

### Claim 6

A device for irradiating an object comprising a planar substrate, an organic resin layer over a top surface of the planar substrate, and an element layer over the organic resin layer with a linear beam, the device comprising:
a laser device comprising a plurality of laser oscillators;
an optical system configured to synthesize laser lights emitted from the plurality of laser oscillators and extend a synthesized laser light;
a mirror configured to reflect the synthesized laser light; and
a lens configured to condense the synthesized laser light reflected by the mirror into the linear beam having an energy density with which the organic resin layer is weakened or adhesion between the organic resin layer and the planar substrate is reduced, wherein the linear beam is configured to enter the organic resin layer after passing through a bottom surface and the top surface of the planar substrate.

### Claim 7 (depends on 6)

The device according to claim 6, wherein the laser device is configured to emit a wavelength of 308 nm or longer.

### Claim 8 (depends on 6)

The device according to claim 6, wherein the organic resin layer comprises any one of an epoxy resin, an acrylic resin, a polyimide resin, a polyamide resin, and a polyamide-imide resin.

### Claim 9 (depends on 6)

The device according to claim 6, wherein the planar substrate is a glass substrate.

### Claim 10 (depends on 6)

The device according to claim 6, wherein the linear beam is configured to enter the organic resin layer after passing through the bottom surface and the top surface in this order.

### Claim 11

A device for irradiating an object comprising a planar substrate, an organic resin layer over a top surface of the planar substrate, and an element layer over the organic resin layer with a linear beam, the device comprising:
a plurality of laser devices;
an optical system configured to synthesize laser lights emitted from the plurality of laser devices and extend a synthesized laser light;
a mirror configured to reflect the synthesized laser light; and
a lens configured to condense the synthesized laser light reflected by the mirror into the linear beam having an energy density with which the organic resin layer is weakened or adhesion between the organic resin layer and the planar substrate is reduced, wherein the linear beam is configured to enter the organic resin layer after passing through a bottom surface and the top surface of the planar substrate.

### Claim 12 (depends on 11)

The device according to claim 11, wherein the laser device is configured to emit a wavelength of 308 nm or longer.

### Claim 13 (depends on 11)

The device according to claim 11, wherein the organic resin layer comprises any one of an epoxy resin, an acrylic resin, a polyimide resin, a polyamide resin, and a polyamide-imide resin.

### Claim 14 (depends on 11)

The device according to claim 11, wherein the planar substrate is a glass substrate.

### Claim 15 (depends on 11)

The device according to claim 11, wherein the linear beam is configured to enter the organic resin layer after passing through the bottom surface and the top surface in this order.