JPH03125332U - - Google Patents

Info

Publication number
JPH03125332U
JPH03125332U JP3393090U JP3393090U JPH03125332U JP H03125332 U JPH03125332 U JP H03125332U JP 3393090 U JP3393090 U JP 3393090U JP 3393090 U JP3393090 U JP 3393090U JP H03125332 U JPH03125332 U JP H03125332U
Authority
JP
Japan
Prior art keywords
brightness
outputs
receiving element
backlight
light receiving
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP3393090U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP3393090U priority Critical patent/JPH03125332U/ja
Publication of JPH03125332U publication Critical patent/JPH03125332U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal Display Device Control (AREA)
  • Electronic Switches (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

図は本考案の好適な一実施例を示し、第１図は
装置全体を概略的に示す回路構成図、第２図は使
用環境の明るさに対応するＣＰＵの入出力状態を
示す説明図である。 １……受光トランジスタ、２……ＣＰＵ、４…
…ＬＥＤ、５……ドライブ用トランジスタ。 The figures show a preferred embodiment of the present invention; Fig. 1 is a circuit diagram schematically showing the entire device, and Fig. 2 is an explanatory diagram showing the input/output status of the CPU depending on the brightness of the usage environment. be. 1... Light receiving transistor, 2... CPU, 4...
...LED, 5...Drive transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] バツクライト用の照明部材の明るさを使用環境
の明るさに応じて制御するバツクライト装置であ
つて、受光量に応じた電気信号を出力する受光素
子と、この受光素子の電気信号に基づいて使用環
境の明暗状態を検知するとともに、この検知結果
に基づいた明るさ制御信号を出力する制御部と、
この明るさ制御信号に応じた明るさで点灯される
バツクライト用の照明部材とを備えたことを特徴
とするバツクライト装置。 A backlight device that controls the brightness of a backlight lighting member according to the brightness of the usage environment, which includes a light receiving element that outputs an electrical signal according to the amount of light received, and a light receiving element that outputs an electrical signal according to the amount of light received, and a a control unit that detects the brightness and darkness of the screen and outputs a brightness control signal based on the detection result;
A backlight device comprising a backlight lighting member that is turned on at a brightness according to the brightness control signal.
JP3393090U 1990-03-30 1990-03-30 Pending JPH03125332U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3393090U JPH03125332U (en) 1990-03-30 1990-03-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3393090U JPH03125332U (en) 1990-03-30 1990-03-30

Publications (1)

Publication Number Publication Date
JPH03125332U true JPH03125332U (en) 1991-12-18

Family

ID=31537963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3393090U Pending JPH03125332U (en) 1990-03-30 1990-03-30

Country Status (1)

Country Link
JP (1) JPH03125332U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003215534A (en) * 2002-01-23 2003-07-30 Seiko Epson Corp Backlight control device for liquid crystal display
JP2009188135A (en) * 2008-02-05 2009-08-20 Sharp Corp Led driver and electronic equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200332A (en) * 1986-02-28 1987-09-04 Stanley Electric Co Ltd Liquid crystal display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200332A (en) * 1986-02-28 1987-09-04 Stanley Electric Co Ltd Liquid crystal display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003215534A (en) * 2002-01-23 2003-07-30 Seiko Epson Corp Backlight control device for liquid crystal display
JP2009188135A (en) * 2008-02-05 2009-08-20 Sharp Corp Led driver and electronic equipment

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