TW200725052A - Privacy apparatus for liquid crystal display - Google Patents

Privacy apparatus for liquid crystal display

Info

Publication number
TW200725052A
TW200725052A TW094147827A TW94147827A TW200725052A TW 200725052 A TW200725052 A TW 200725052A TW 094147827 A TW094147827 A TW 094147827A TW 94147827 A TW94147827 A TW 94147827A TW 200725052 A TW200725052 A TW 200725052A
Authority
TW
Taiwan
Prior art keywords
liquid crystal
lcd
crystal display
privacy apparatus
chromo
Prior art date
Application number
TW094147827A
Other languages
Chinese (zh)
Inventor
Wen-Hao Zhan
Cheng-Jia Huang
Yu-Wen Lin
Original Assignee
Sumika Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumika Technology Inc filed Critical Sumika Technology Inc
Priority to TW094147827A priority Critical patent/TW200725052A/en
Publication of TW200725052A publication Critical patent/TW200725052A/en

Links

Landscapes

  • Liquid Crystal (AREA)

Abstract

A privacy apparatus for liquid crystal display is provided. The privacy apparatus consists of a light source, a first bi-directional chromo polarizer, a liquid crystal layer, at least a retardation plate, and a second bi-directional chromo polarizer. This apparatus incorporates the retardation plate and the liquid crystal layer to increase the phase shift of the thickness direction and keep the contrast of the center viewing angle of a LCD unchanged. In watching the LCD image from two lateral viewing angles, the dark state of the LCD greatly increases so as to greatly reduce the contrast, making the LCD image unclearly visible to watchers viewing from lateral sides.
TW094147827A 2005-12-30 2005-12-30 Privacy apparatus for liquid crystal display TW200725052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW094147827A TW200725052A (en) 2005-12-30 2005-12-30 Privacy apparatus for liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW094147827A TW200725052A (en) 2005-12-30 2005-12-30 Privacy apparatus for liquid crystal display

Publications (1)

Publication Number Publication Date
TW200725052A true TW200725052A (en) 2007-07-01

Family

ID=57912445

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094147827A TW200725052A (en) 2005-12-30 2005-12-30 Privacy apparatus for liquid crystal display

Country Status (1)

Country Link
TW (1) TW200725052A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102510435A (en) * 2011-10-09 2012-06-20 华映视讯（吴江）有限公司 Anti-peeping display system
CN102708833A (en) * 2012-03-28 2012-10-03 山东师范大学 Anti-peep display system
CN112394547A (en) * 2019-08-16 2021-02-23 中强光电股份有限公司 Visual angle control structure and display device
CN113917716A (en) * 2020-07-10 2022-01-11 群创光电股份有限公司 Display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102510435A (en) * 2011-10-09 2012-06-20 华映视讯（吴江）有限公司 Anti-peeping display system
CN102708833A (en) * 2012-03-28 2012-10-03 山东师范大学 Anti-peep display system
CN112394547A (en) * 2019-08-16 2021-02-23 中强光电股份有限公司 Visual angle control structure and display device
CN113917716A (en) * 2020-07-10 2022-01-11 群创光电股份有限公司 Display device

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