Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2018068598-A1
Application number	US-201715682613-A
Country	US
Kind code	A1
Filing date	Aug 22, 2017
Priority date	Sep 6, 2016
Publication date	Mar 8, 2018
Grant date	—

Abstract

A display apparatus includes a lower substrate, an upper substrate facing the lower substrate, an optical medium layer between the lower and upper substrates, a display area at which an image is displayed, and a peripheral area adjacent to the display area and at which the image is not displayed. The lower substrate includes a flexible film on a lower base substrate and including a flat portion in the display and peripheral area, and the flat portion extending from the peripheral area and along a side surface of the lower base substrate to define a bent portion in the peripheral area, a thin film transistor on the flexible film in the display area, a connecting line on the flexible film in the peripheral area and electrically connected to the thin film transistor, and a wire grid polarizer between the flexible film and the optical medium layer in the display area.

First claim

What is claimed is:

1 . A display apparatus, comprising:
a lower substrate; an upper substrate facing the lower substrate; a display area at which an image is displayed with light; a peripheral area adjacent to the display area and at which the image is not displayed; and an optical medium layer disposed between the lower substrate and the upper substrate and through which the light is passed or blocked to display the image, wherein the lower substrate comprises:
a lower base substrate;
a flexible film disposed on the lower base substrate and comprising:
a flat portion thereof in the display area and in the peripheral area, and
the flat portion extending from the peripheral area and along a side surface of the lower base substrate to define a bent portion of the flexible film in the peripheral area;

a thin film transistor disposed on the flat portion of the flexible film in the display area;
a connecting line disposed on the flat portion of the flexible film in the peripheral area and electrically connected to the thin film transistor; and
a wire grid polarizer disposed between the flat portion of the flexible film in the display area and the optical medium in the display area.

2 . The display apparatus of claim 1 , wherein the flexible film comprises at least one among polyimide, polyethylene terephthalate, polycarbonate, polyethylene naphthalate and polyacrylate.

3 . The display apparatus of claim 2 , wherein the flexible film has a thickness greater than or equal to about 1 micrometer.

4 . The display apparatus of claim 3 , further comprising a first insulation layer disposed on the flexible film and comprising an inorganic insulation material.

5 . The display apparatus of claim 1 , further comprising:
a gate pattern disposed on the flat portion of the flexible film in the display area; and a data pattern disposed on the gate pattern in the display area; wherein the connecting line in the peripheral area is formed from a same material layer as the gate pattern or the data pattern in the display area.

6 . The display apparatus of claim 5 , further comprising a protecting layer disposed on the connecting line in the peripheral area.

7 . The display apparatus of claim 6 , further comprising:
a second insulation layer disposed between the gate pattern and the data pattern in the display area; and a third insulation layer disposed on the data pattern in the display area, wherein the protecting layer on the connecting line in the peripheral area is formed from a same material layer as the second insulation layer or the third insulation layer in the display area.

8 . The display apparatus of claim 1 , wherein the wire grid polarizer has a pitch of about 50 nanometers to about 150 nanometers.

9 . The display apparatus of claim 8 , further comprising a capping layer on the wire grid polarizer in the display area.

10 . The display apparatus of claim 1 , further comprising a driving part which generates and provides signals for driving the display area, the driving part disposed at a distal end of the bent portion of the flexible film in the peripheral area and electrically connected to the connecting line in the peripheral area.

11 . A method of manufacturing a display apparatus, the method comprising:
forming a lower display substrate comprising:
forming a flexible film on a lower base substrate in a display area at which an image is displayed with light, the flexible film in the display area extended to a peripheral area which is adjacent to the display area and at which the image is not displayed;
forming a wire grid polarizer on the flexible film in the display area;
forming a thin film transistor on the wire grid polarizer in the display area, and
forming a connecting line on the flexible film in the peripheral area and electrically connected to the thin film transistor in the display area,
forming an upper display substrate to face the lower display substrate, disposing a sealing member and an optical medium layer between the lower display substrate and the upper display substrate; separating a portion of the lower base substrate in the peripheral area from a portion of the flexible film in the peripheral area to expose an outer side surface of the lower base substrate; and bending the flexible film and the connecting line in the peripheral area along the exposed outer side surface of the lower base substrate to form the display apparatus.

12 . The method of claim 11 , wherein the separating of the portion of the lower base substrate comprises irradiating a laser beam to the portion of the flexible film in the peripheral area and removing the portion of the lower base substrate from a remainder of the lower base substrate.

13 . The method of claim 11 , wherein the forming of the flexible film comprises coating at least one among polyimide, polyethylene terephthalate, polycarbonate, polyethylene naphthalate and polyacrylate on the lower base substrate.

14 . The method of claim 11 , wherein the flexible film has a thickness of greater than or equal to about 1 micrometer.

15 . The method of claim 11 , further comprising forming a first insulation layer on the flexible film in the display area before the forming of the wire grid polarizer, the first insulation layer comprising an inorganic insulation layer.

16 . The method of claim 11 , further comprising:
forming a gate pattern on the flexible film in the display area; and forming a data pattern on the gate pattern in the display area, wherein the connecting line in the peripheral area is formed from a same material layer as the gate pattern or the data pattern in the display area.

17 . The method of claim 16 , further comprising forming a protecting layer on the connecting line in the peripheral area.

18 . The method of claim 17 , further comprising:
forming a second insulation layer on the gate pattern in the display area; and forming a third insulation layer on the data pattern in the display area, wherein the protecting layer in the peripheral area is formed from a same material layer as the second insulation layer or the third insulation layer in the display area.

19 . The method of claim 11 , wherein the wire grid polarizer has a pitch of about 50 nanometers to about 150 nanometers.

20 . The method of claim 19 , further comprising forming a capping layer on the wire grid polarizer in the display area.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jang-Hyun
• Kim Minsu
• Kim Jin-Lak
• Noh Dongsoup
• Han Sehee

Classifications

• H01L51/5253

  Electricity · mapped topic

• H01L27/1203

  Electricity · mapped topic

• H01L51/0097

  Electricity · mapped topic

• G09G3/002 Primary

  to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title