Display device and method for manufacturing the same

• US 8,456,595 B2
• Filed: 06/11/2012
• Issued: 06/04/2013
• Est. Priority Date: 11/13/2008
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Gwan-Soo, Kim, Jae-Hoon, Kwon, Seong-Gyu, Min, Tae-Gee, Lee, Sang-Hun, Shim, Yi-Seop, Chang, Sun-Young
• Primary Examiner(s): DUDEK, JAMES A
• Application Number:
  US13/493,666
• Publication Number:
  US 20120249937A1
• Time in Patent Office: 358 Days
• Field of Search: 349/110, 349/106, 349/156
• US Class Current: 349/106
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• 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 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 1/136209 Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
• CPC Class Codes: G02F 1/136222 Colour filters incorporated in the active matrix substrate
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer

Abstract

The present invention relates to a display device and a method for manufacturing the display device. The display device includes at least one partition formed on a lower display panel. A color filter may fill a region defined by the partitions. A first upper passivation layer is formed on the color filter, and a second upper passivation layer is formed on the first upper passivation layer and the partitions such that the LCD structure is planarized. In the display device, the height of the partition is sufficiently high to prevent mixing of the colors of neighboring pixel filters, and the process margin of the spacer and the light blocking member may be ensured. The partitions can be formed with multiple layers having different widths such that the mixture of colors between the neighboring pixels may be prevented, and the color reproducibility may be increased.

Claims

1. A display device, comprising:

a first substrate;

a gate line disposed on the first substrate;

a data line crossing the gate line;

a thin film transistor connected to the gate line and the data line;

at least one partition disposed on the gate line and the data line;

a color filter filling a region defined by the at least one partition;

a pixel electrode connected to the thin film transistor and disposed on the color filter;

a second substrate facing the first substrate; and

a spacer disposed on the at least one partition to maintain an interval between the first substrate and the second substrate, wherein the at least one partition comprises a lower partition and an upper partition having a smaller width than the lower partition, and

wherein an upper surface of the color filter is disposed at a height that is between a height of an upper surface of the lower partition and a height of an upper surface of the upper partition.

2. The display device of claim 1, further comprising:

a common electrode disposed on the second substrate; and

a liquid crystal layer disposed between the first substrate and the second substrate.

3. The display device of claim 2, further comprising:

an upper passivation layer disposed between the color filter and the pixel electrode,

wherein the upper passivation layer is disposed at a same height as the upper partition, or the upper passivation layer covers the upper partition.

4. The display device of claim 3, further comprising:

a lower passivation layer disposed on the thin film transistor, the gate line, and the data line.