Liquid crystal display device

• US 10,054,824 B2
• Filed: 12/06/2017
• Issued: 08/21/2018
• Est. Priority Date: 12/15/2008
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Japan Display Incorporated, Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Inventors: Nagami, Takahiro
• Primary Examiner(s): Nguyen, Hoan C
• Application Number:
  US15/832,883
• Publication Number:
  US 20180095310A1
• Time in Patent Office: 258 Days
• Field of Search: 349153, 349190
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13398 Spacer materials; Spacer properties
• CPC Class Codes: G02F 1/1341 Filling or closing of cells

Abstract

A display device includes a display panel having a display region and a peripheral region, the display panel including a TFT substrate, a counter substrate fixed to the TFT substrate by seal material formed at the peripheral region, and liquid crystal interposed between the TFT substrate and the counter substrate. The TFT substrate includes an inorganic film and an organic film, with first column spacers being formed on the counter substrate. The organic film includes a first part which has an island-like shape formed at the peripheral region and a second part formed at the display region, and the seal material covers at least one of the first column spacers and the first part of the organic film, and is in contact with the inorganic film. The first part of the organic film is separated from the second part of the organic film of the organic film.

Claims

1. A display device comprising:

a first substrate has an inorganic film and an organic film formed on the inorganic film,

a second substrate opposed to the first substrate, and

a seal material bonding the first substrate and the second substrate,

wherein the seal material is surrounding a display area,

the organic film has a first slit formed in a region where is overlapped with the seal material and extended along a extending direction of the seal material,

the organic film has a first part formed in the display area, a second part formed closer to an end of the first substrate than the first slit, and a third part formed between the first part and the second part, and

the third part is formed apart from the first part and the second part,

the seal material is provided between the second part and the third part and does not provided between the first part and the third part.

2. The display device according to claim 1, wherein

the third part is formed between the display area and the seal material, and does not overlapped with the seal material.

3. The display device according to claim 1, wherein

the organic film has a second slit formed between the first part and the third part,

the third part is formed apart from the first part and the second part by the first slit and the second slit.

4. The display device according to claim 1, further comprising a spacer formed on the second substrate,

wherein the spacer has a first spacer opposed to the first part and a second spacer opposed to the second part.

5. The display device according to claim 4, wherein

the spacer has a third spacer opposed to the third part.

6. The display device according to claim 1, wherein

the inorganic film has a first inorganic film formed on the first substrate, and a second inorganic film formed on the first inorganic film,

the organic film is formed on the second inorganic film.

7. The display device according to claim 6, further comprising a first wiring and a second wiring formed over the first substrate,

wherein the first wiring is formed between the first substrate and the first inorganic film, and the second wiring is formed between the first inorganic film and the second inorganic film,

the first wiring and the second wiring are disposed overlapped with the first part and the third part.

8. The display device according to claim 7, wherein

at least one of the first wiring and the second wiring is disposed overlapped with the second part.