# US 9,437,822 B2 · Display module manufacturing method and display module

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- Number: US 9,437,822 B2
- Document ID: US9437822B2
- Status: Granted
- Kind: B2
- Application number: 14/727,415
- Filed: 2015-06-01
- Published: 2016-02-04
- Granted: 2016-09-06
- Earliest claimed: 2014-08-01
- Assignees: Au Optronics Corporation
- Applicants: Au Optronics Corporation
- Inventors: Jia-Hua Lin; Chih-Hung Tsai
- Web page: https://patentgrep.com/patent/US9437822B2

## CPC

- H10K 71/231: {by etching of existing layers}
- G02F 1/133514: {Colour filters}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- H10K 59/871: {Self-supporting sealing arrangements}
- H10K 71/80: using temporary substrates
- H05B 45/20: Controlling the colour of the light
- H05B 45/60: Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- H10K 59/1201: {Manufacture or treatment}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

The present invention provides a manufacturing method of a display module, including a step of disposing a substrate on a transparent carrier plate, wherein the substrate has a bottom surface and a supporting surface opposite to the bottom surface; the bottom surface is attached to the transparent carrier plate and includes a first area and a second area. A step of performing a display elements manufacturing process on the supporting surface. A step of etching the first area by a first energy having a first energy density passing through the transparent carrier plate to separate the first area from the transparent carrier plate. A step of etching the second area by a second energy having a second energy density passing through the transparent carrier plate to separate the second area from the transparent carrier plate, wherein the second energy density is greater than the first energy density. A step of separating the substrate from the transparent carrier plate.

## Claims

### Claim 1

A manufacturing method of a display module, including:
(a) disposing a substrate on a transparent carrier plate; wherein the substrate has a bottom surface and a supporting surface opposite to the bottom surface; the bottom surface is attached to the transparent carrier plate and includes a first area and a second area;
(b) performing a display elements manufacturing process on the supporting surface;
(c) etching the first area by a first energy having a first energy density passing through the transparent carrier plate to separate the first area from the transparent carrier plate;
(d) etching the second area by a second energy having a second energy density passing through the transparent carrier plate to separate the second area from the transparent carrier plate, wherein the second energy density is greater than the first energy density;
(e) separating the substrate from the transparent carrier plate.

### Claim 2 (depends on 1)

The manufacturing method of claim 1, wherein the step (b) comprises:
(b1) disposing a plurality of pixel units on a visual area of the supporting surface corresponding to the first area;
(b2) disposing a plurality of signal circuits and a driving circuit on a signal area of the supporting surface corresponding to the second area; and
(b3) filing a glue material between the driving circuit and the pixel units.

### Claim 3 (depends on 1)

The manufacturing method of claim 1, wherein
the step (c) comprises: scanning the first area with a plurality of first energy beams, wherein the plurality of first energy beams constitute the first energy;
the step (d) comprises: scanning the second area with a plurality of second energy beams, wherein the plurality of second energy beams constitute the second energy; wherein energy per unit area of the first energy beam is less than energy per unit area of the second energy beam.

### Claim 4 (depends on 1)

The manufacturing method of claim 1, wherein
the step (c) comprises: scanning the first area with a plurality of first energy beams, wherein the plurality of first energy beams constitute the first energy; wherein a first midline distance exists between adjacent first energy beams;
the step (d) comprises: scanning the second area with a plurality of second energy beams, wherein the plurality of second energy beams constitute the second energy; wherein a second midline distance exists between the adjacent second energy beams;
wherein the first midline distance is greater than the second midline distance.

### Claim 5 (depends on 1)

A display module made by the manufacturing method recited in claim 1, wherein a first average thickness between the first area and the supporting surface is greater than a second average thickness between the second area and the supporting surface; the bottom surface of the further has notches in the first area and the second area, wherein the notches are resulted from etching of the first energy and the second energy.