STRETCHED DISPLAY PANEL AND MANUFACTURING METHOD THEREFOR

• US 20190033637A1
• Filed: 02/17/2017
• Published: 01/31/2019
• Est. Priority Date: 03/08/2016
• Status: Active Grant

• Current Assignee: Tovis Co., Ltd.
• Original Assignee: Tovis Co., Ltd.
• Inventors: JEONG, Young Tae
• Granted Patent: US 10,459,295 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/133351 Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/1362 Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence
• CPC Class Codes: G02F 1/136222 Colour filters incorporated in the active matrix substrate

Abstract

A method of manufacturing a stretched display panel, includes: cutting the TFT substrate to a desired size; cutting the color filter substrate so as to have a length smaller than a length of the TFT substrate such that a pixel exposure portion, from which one or more horizontal pixel lines are exposed, is formed at the TFT substrate; forming a short-circuit prevention seal for covering one of the horizontal pixel lines that is adjacent to an end of the color filter substrate in order to prevent occurrence of a short circuit due to introduction of foreign matter; and forming an cutoff line for cutting off the horizontal pixel line(s) that is not covered by the short-circuit prevention seal and the horizontal pixel line that is covered by the short-circuit prevention seal from each other.

Claims

1. A method of manufacturing a stretched display panel by cutting a ready-made display panel comprising a color filter substrate and a thin film transistor (TFT) substrate to a desired size, the method comprising:

cutting the TFT substrate to a desired size;

cutting the color filter substrate so as to have a length smaller than a length of the TFT substrate such that a pixel exposure portion, from which one or more horizontal pixel lines are exposed, is formed at the TFT substrate;

forming a short-circuit prevention seal for covering one of the horizontal pixel lines that is adjacent to an end of the color filter substrate in order to prevent occurrence of a short circuit due to introduction of foreign matter; and

forming an cutoff line for cutting off the horizontal pixel line(s) that is not covered by the short-circuit prevention seal and the horizontal pixel line that is covered by the short-circuit prevention seal from each other.

2. The method according to claim 1, further comprising forming a reinforcement seal for entirely covering the pixel exposure portion of the TFT substrate, from which the horizontal pixel lines are exposed, in order to increase a rigidity of the pixel exposure portion.

3. The method according to claim 1, wherein the step of forming the short-circuit prevention seal comprises:

applying a hardenable resin so as to cover one of the horizontal pixel lines exposed from the pixel exposure portion that is adjacent to a cut end of the color filter substrate; and

performing hardening treatment in order to harden the hardenable resin.

4. The method according to claim 1, wherein the cutoff line is formed through incineration using a laser.

5. The method according to claim 1, further comprising supplying electric power to the display panel in order to inspect whether noise is generated from the display panel (a preliminary inspection step), the preliminary inspection step being performed between the step of cutting the color filter substrate so as to have a length smaller than the length of the TFT substrate and the step of forming the short-circuit prevention seal.

6. The method according to claim 1, further comprising supplying electric power to the display panel in order to inspect whether noise is generated from the display panel (a final inspection step), the final inspection step being performed after the step of forming the cutoff line.

7. A stretched display panel manufactured using a method of manufacturing a stretched display panel according to claim 1.

8. A stretched display panel manufactured by cutting a ready-made display panel comprising a color filter substrate and a TFT substrate to a desired size, the stretched display panel comprising:

a pixel exposure portion extending from the TFT substrate so as to be longer than a cut end of the color filter substrate in order to expose one or more horizontal pixel lines;

a short-circuit prevention seal for covering one of the horizontal pixel lines that is adjacent to the cut end of the color filter substrate, among the horizontal pixel lines exposed through the pixel exposure portion, in order to prevent occurrence of a short circuit due to foreign matter; and

an cutoff line for cutting off the horizontal pixel line(s) that is not covered by the short-circuit prevention seal and the horizontal pixel line that is covered by the short-circuit prevention seal from each other.

9. The stretched display panel according to claim 8, further comprising a reinforcement seal for entirely covering the pixel exposure portion of the TFT substrate, from which the horizontal pixel lines are exposed, in order to increase a rigidity of the pixel exposure portion.

10. The stretched display panel according to claim 8, wherein the short-circuit prevention seal is a hardenable resin configured to be hardened through hardening treatment.

11. The stretched display panel according to claim 8, wherein the cutoff line is formed through incineration using a laser.