Color display device

• US 5,164,715 A
• Filed: 04/10/1990
• Issued: 11/17/1992
• Est. Priority Date: 05/25/1989
• Status: Expired due to Fees

• Current Assignee: Stanley Electric Company Limited
• Original Assignee: Stanley Electric Company Limited
• Inventors: Funakoshi, Izumi, Kashiwabara, Houichiro, Nakagawa, Satoshi, Akiyama, Ryouichi, Yoneda, Koutaro
• Primary Examiner(s): Brier, Jeffrey A.
• Assistant Examiner(s): Chin, Jick
• Application Number:
  US02/007,691
• Time in Patent Office: 952 Days
• Field of Search: 340/784, 340/782, 340/702, 340/716, 340/794, 340/795, 340/796, 340/815.1, 340/752, 313/754, 313/483, 313/501, 362/800, 362/84, 362/228, 358/901, 350/332, 350/333, 350/334, 350/339 F, 350/345
• US Class Current: 345/4
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A color display device comprises a blue color emitting light source consisting of a blue color emitting fluorescent lamp or a white color emitting fluorescent lamp attached with a blue color filter, and a liquid crystal panel for controlling the transmission of the blue color light for every pixel, wherein one end of every optical fiber provided for every pixel is fixed to a position on a fiber board where every blue color signal for every pixel passing through said liquid crystal panel can be incident, and the other end thereof is fixed to a corresponding position on a printed board on which a red color emitting LED and a green color emitting LED are mounted for every pixel, to have a full-color display by controlling the drive of said red color emitting LED, green color emitting LED and liquid crystal panel.

Claims

1. A color display device comprising:

a blue color emitting light source consisting of a blue color emitting fluorescent lamp or a white color emitting fluorescent lamp attached with a blue color filter,

a liquid crystal panel for controlling a transmission of the blue color light;

an optical fiber having a first end positioned on a fiber board where said blue color light, passing through said liquid crystal panel can be incident, said optical fiber having a second end being

fixed to a corresponding position on a printed board on which a red color emitting LED and a green color emitting LED are mounted, said printed board being adapted to produce a full-color display by controlling a drive of said red color emitting LED, green color emitting LED, and said liquid crystal panel.

2. A color display device as claimed in claim 1, wherein the other end of the optical fiber is fixed to a printed board after protruding through said printed board from the back surface to the front surface.

3. A color display device as claimed in claim 1, wherein the light transmittance of said liquid crystal panel is variable.

4. A color display device comprising:

a blue colored light emitting source;

liquid crystal panel means, coupled to said emitting source, for selectively transmitting certain discrete portions of said emitted blue colored light;

a plurality of optical fibers, each of said fibers having a first end fixed to a unique position on a fiber board and adapted to receive said certain discrete portions of said blue colored light, each of said plurality of optical fibers further having a second end fixed to a unique and certain position on a printed board on which a plurality of red colored light emitting diodes and a plurality of green colored light emitting diodes are mourned, said printed board being adapted to produce a full-color display for controlling a device of said red colored light emitting diode, said green colored light emitting diodes, and said liquid crystal panel.

5. a color display device as claimed in claim 4, wherein the second end of each of said plurality of optical fibers is fixed to said printed board after protruding through said printed board from the back surface to the front surface thereof.

6. A color display device as claimed in claim 4 wherein, said liquid crystal panel means comprises a plurality of pattern electrodes.