Polarizer, display substrate, display panel having the same and method of manufacturing the same

• US 9,575,356 B2
• Filed: 06/29/2015
• Issued: 02/21/2017
• Est. Priority Date: 12/12/2014
• Status: Active Grant

• Current Assignee: TCL China Star Optoelectronics Technology Co. Ltd. (TCL Technology Group Corp.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Nam, Jung-Gun, Jo, Gug-Rae, An, Moon-Jung, Lee, Dae-Young
• Primary Examiner(s): Nguyen, Dao H
• Application Number:
  US14/753,644
• Publication Number:
  US 20160170261A1
• Time in Patent Office: 603 Days
• Field of Search: 349/62, 349/114, 313/504, 313/506, 257/72, 257/89, 257/98, 257/E27.12, 257/E31.127
• US Class Current: 1/1
• CPC Class Codes: G02B 27/288 Filters employing polarising elements, e.g. Lyot or Solc filters G02B5/3016 takes precedence
• CPC Class Codes: G02B 5/3058 comprising electrically conductive elements, e.g. wire grids, conductive particles
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133548 Wire-grid polarisers
• CPC Class Codes: G02F 1/133553 Reflecting elements associated to illuminating devices G02F1/133605
• CPC Class Codes: G02F 1/13362 providing polarized light, e.g. by converting a polarisation component into another one
• 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 2201/52 RGB geometrical arrangements
• CPC Class Codes: H01F 27/322 the insulation forming channels for circulation of the fluid
• CPC Class Codes: H01L 27/1214 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/351 comprising more than three subpixels, e.g. red-green-blue-white [RGBW]

Abstract

A display panel includes a light blocking pattern and a polarizer. The light blocking pattern is disposed on a base substrate. A plurality of opening areas is defined based on the light blocking pattern. The polarizer includes a plurality of linear patterns spaced apart from each other. The plurality of opening areas includes a color area transmitting color light and a white area transmitting white light. The polarizer overlaps the color area and the white area.

Claims

1. A display panel, comprising:

a first display substrate comprising a light blocking pattern disposed on a first base substrate and a plurality of opening areas being defined based on the light blocking pattern;

a first polarizer comprising a plurality of first linear patterns spaced apart from each other;

a second display substrate opposite to the first display substrate, the second display substrate comprising a switching device disposed on a second base substrate; and

a second polarizer comprising a plurality of second linear patterns spaced apart from each other and overlapping the first polarizer, wherein;

the plurality of opening areas comprise a color area configured to transmit color light and a white area configured to transmit white light; and

the first polarizer and the second polarizer overlap the color area and the white area.

2. The display panel of claim 1, wherein:

the color area comprises a color filter configured to transmit red light, green light, and blue light; and

the color filter is not formed in the white area.

3. The display panel of claim 1, wherein:

the first polarizer and the second polarizer comprise at least one material selected from the group consisting of aluminum (Al), gold (Au), silver (Ag), copper (Cu), chrome (Cr), iron (Fe), and nickel (Ni).

4. The display panel of claim 1, wherein the light blocking pattern comprises a black coloring agent and organic material.

5. The display panel of claim 1, wherein the first polarizer and the second polarizer are not disposed on an area on which the light blocking pattern is disposed.

6. The display panel of claim 1, wherein:

the light blocking pattern comprises a reflection pattern comprising metal; and

the reflection pattern and the first polarizer are disposed on a same layer.

7. The display panel of claim 6, wherein the reflection pattern overlaps the switching device.

8. The display panel of claim 7, wherein the reflection pattern comprises at least one material selected from the group consisting of aluminum (Al), gold (Au), silver (Ag), copper (Cu), chrome (Cr), iron (Fe), and nickel (Ni).

9. The display panel of claim 1, further comprising a column spacer disposed on the light blocking pattern.