IP Library Granted Patent US 7,440,053
Granted Patent B2
US 7,440,053 · App. 10/510,589 · Granted Oct 21, 2008

Transflective liquid crystal display device and method of manufacturing the same

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Quick Facts
Patent No.
US 7,440,053
App. No.
10/510,589
Granted
Oct 21, 2008
Kind
B2
Abstract

To provide a transflective liquid crystal display device in which an amount of reflected light can be increased in a reflective mode. A liquid crystal panel 10 has a first glass substrate 101 and a second glass substrate 105 . A backlight 11 is placed on the outside of the liquid crystal panel 10 . A transmissive region 102 has a rectangular shape and is arranged in the center of the pixel. A reflective region 103 is arranged around the transmissive region 102 . A reflecting layer 104 is formed in the reflective region 103 of the first glass substrate 101 . A scattering layer 106 is formed in the transmissive region 102 of the second glass substrate 105.

Claims (15)

1. A transflective liquid crystal display device comprising:

a liquid crystal panel, the liquid crystal panel having a transmissive region and a reflective region in each pixel, and being constructed of a first and a second substrate facing each other, the first substrate having a reflecting member, and the second substrate having at least one scattering member;

wherein the reflecting member is arranged in a first region other than the transmissive region, and a first scattering member is arranged only in at least part of the transmissive region.

2. The device according to claim 1 , wherein the second substrate has a second scattering member arranged in a second region corresponding to the reflective region, the second scattering member having a lower scattering effect than that of the first scattering member.

3. A transflective liquid crystal display device comprising:

a liquid crystal panel, the liquid crystal panel having a transmissive region and a reflective region in each pixel, and being constructed of a first and a second substrate facing each other, the first substrate having a reflecting member arranged in a first region other than the transmissive region, and the second substrate having a first color filter having with a scattering effect arranged in the transmissive region and a second color filter arranged in a second region corresponding to the reflective region.

4. The device according claim 3 , wherein said first color filter has a color different from that of the second color filter.

5. A method of providing a transfiective liquid crystal display device having a liquid crystal panel with a transmissive region and a reflective region in each pixel and being constructed of a first and a second substrate facing each other, the method comprising:

arranging a reflecting member in a first region other than the transmissive region of the first substrate; and,

arranging at least one scattering member on the second substrate, wherein a first scattering member is arranged only in at least part of the transmissive region of said second substrate, but not in the first region.

6. The method according to claim 5 , further comprising the step of arranging a second scattering member in a second region of the second substrate corresponding to the first region, the second scattering member having a lower scattering effect than that of the first scattering member.

7. A method of providing a transflective liquid crystal display device having a liquid crystal panel with a transmissive region and a reflective region in each pixel and being constructed of a first and a second substrate facing each other, comprising the steps of:

arranging a reflecting member in a first region other than the transmissive region of the first substrate;

arranging a first color filter having a scattering effect only in at least part of the transmissive region of the second substrate; and

arranging a second color filter in a second region of the second substrate corresponding to the first region.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 20, 2007
From: KONINKLIJKE PHILIPS ELECTRONICS N.V.
To: TPO HONG KONG HOLDING LIMITED
Reel/Frame 019038/0320 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 8, 2004
From: HAMAWAKI, YOSHIHIKO
To: KONINKLIJKE PHILIPS ELECTRONICS N.V.
Reel/Frame 016413/0461 →